President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE will enter 2019 with several fresh faces in his Cabinet, setting up high-profile confirmation hearings.

Here's a breakdown of where Trump’s Cabinet stands heading into 2019.

Attorney general

Trump has nominated former Attorney General William Barr to replace Jeff Sessions Jefferson (Jeff) Beauregard SessionsRoy Moore sues Alabama over COVID-19 restrictions GOP set to release controversial Biden report Trump's policies on refugees are as simple as ABCs MORE.

Barr’s confirmation battle will be one to watch in 2019, as Democrats are sure to turn the hearing into a referendum on how the nominee will handle special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE’s investigation. Barr has said little publicly about the probe.

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Barr previously served as attorney general under former President George H.W. Bush, where he sought to crack down on crime.

Barr also would be tasked with carrying out Trump’s desired policies on law enforcement and efforts to crack down on illegal immigration.

If confirmed, Barr’s relationship with Trump will be under a microscope as the president has regularly railed against the special counsel's investigation and questioned why Democrats haven't been investigated.

Matthew Whitaker is currently running the Justice Department in an acting capacity.

Defense secretary

Defense Secretary James Mattis James Norman MattisBiden courts veterans amid fallout from Trump military controversies Trump says he wanted to take out Syria's Assad but Mattis opposed it Gary Cohn: 'I haven't made up my mind' on vote for president in November MORE announced his plans to leave the administration in a letter of resignation on Dec. 20.

While Trump attempted to portray Mattis’s exit as a retirement, the secretary’s letter informing the president of his resignation made clear that was not the case.

Mattis’s note was filled with implicit criticism of Trump’s foreign policy, emphasizing the need to maintain relationships with NATO allies and stand up to authoritarian powers like Russia and China.

Trump said on Twitter that he will nominate a replacement “shortly.” Deputy Defense Secretary Patrick Shanahan Patrick Michael ShanahanHouse Armed Services chairman expresses confidence in Esper amid aircraft carrier coronavirus crisis Boeing pleads for bailout under weight of coronavirus, 737 fallout Esper's chief of staff to depart at end of January MORE will take over on an acting capacity in the new year.

The president’s decision to withdraw troops from Syria and reported decision to lower the number of troops in Afghanistan were seen as a factor in Mattis’s exit and are sure to come up in the confirmation hearings for his successor.

Retired Army Gen. Jack Keane and Sens. Tom Cotton Tom Bryant CottonThe Hill's 12:30 Report: Trump stokes fears over November election outcome The Hill's Morning Report - Sponsored by Facebook - Trump previews SCOTUS nominee as 'totally brilliant' Abortion stirs GOP tensions in Supreme Court fight MORE (R-Ark.) and Lindsey Graham Lindsey Olin GrahamSteele Dossier sub-source was subject of FBI counterintelligence probe Hillicon Valley: Subpoenas for Facebook, Google and Twitter on the cards | Wray rebuffs mail-in voting conspiracies | Reps. raise mass surveillance concerns Key Democrat opposes GOP Section 230 subpoena for Facebook, Twitter, Google MORE (R-S.C.) have reportedly been considered potential replacements, though Graham has indicated he has no desire to join Trump’s Cabinet and all three have been critical of the Syria withdrawal.

Interior secretary

Interior Secretary Ryan Zinke Ryan Keith ZinkeTrump extends Florida offshore drilling pause, expands it to Georgia, South Carolina Conspicuous by their absence from the Republican Convention Trump flails as audience dwindles and ratings plummet MORE will leave the Cabinet at the end of the year under a cloud of alleged ethics rules violations.

The former congressman had come under scrutiny over alleged conflicts of interest in land deals his department oversaw, as well as concerns over his government spending and use of charter flights.

Deputy Interior Secretary David Bernhardt, who will serve as the acting secretary in Zinke’s absence, is considered a potential full-time replacement.

Other candidates include Rep. Rob Bishop Robert (Rob) William BishopOVERNIGHT ENERGY: House passes sweeping clean energy bill | Pebble Mine CEO resigns over secretly recorded comments about government officials | Corporations roll out climate goals amid growing pressure to deliver House passes sweeping clean energy bill OVERNIGHT ENERGY: California seeks to sell only electric cars by 2035 | EPA threatens to close New York City office after Trump threats to 'anarchist' cities | House energy package sparks criticism from left and right MORE (R-Utah), outgoing Sen. Dean Heller Dean Arthur HellerOn The Trail: Democrats plan to hammer Trump on Social Security, Medicare Lobbying World Democrats spend big to put Senate in play MORE (R-Nev.) and former Rep. Cynthia Lummis Cynthia Marie LummisChamber of Commerce endorses McSally for reelection Cynthia Lummis wins GOP Senate primary in Wyoming Chamber of Commerce endorses Ernst for reelection MORE (R-Wyo.), who has expressed interest in the job.

The eventual nominee will likely face opposition from Democrats, who have expressed concerns about the administration’s environmental and land use policies.

Ambassador to the United Nations

Trump has nominated Heather Nauert, the spokeswoman for the State Department, to replace outgoing Ambassador Nikki Haley Nimrata (Nikki) Haley'The soul' versus 'law and order' Author Ryan Girdusky: RNC worked best when highlighting 'regular people' as opposed to 'standard Republicans' GOP lobbyists pleasantly surprised by Republican convention MORE.

Nauert will be a central figure in advancing Trump’s foreign policy, but her credentials for the job are likely to be a main focus of her looming confirmation hearing.

Nauert has worked as the State Department’s chief spokeswoman since April 2017, when she was hired by then-Secretary of State Rex Tillerson Rex Wayne TillersonGary Cohn: 'I haven't made up my mind' on vote for president in November Kushner says 'Alice in Wonderland' describes Trump presidency: Woodward book Conspicuous by their absence from the Republican Convention MORE. She was later promoted to acting under secretary for public diplomacy and public affairs.

Prior to her job at the State Department, Nauert worked as an anchor and reporter at Fox News.

Chief of staff

John Kelly John Francis KellyMORE is on the way out after a little more than a year as White House chief of staff, and he is being replaced on an acting basis by Office of Management and Budget chief Mick Mulvaney Mick MulvaneyOn The Money: House panel pulls Powell into partisan battles | New York considers hiking taxes on the rich | Treasury: Trump's payroll tax deferral won't hurt Social Security Blockchain trade group names Mick Mulvaney to board Mick Mulvaney to start hedge fund MORE.

Mulvaney has been a conservative stalwart dating to his time as a member of the House Freedom Caucus.

The president had a series of top contenders for the job turn him down in recent weeks, including Vice President Pence’s top aide, Nick Ayers, Rep. Mark Meadows Mark Randall MeadowsAnxious Democrats amp up pressure for vote on COVID-19 aid Pelosi hopeful COVID-19 relief talks resume 'soon' The Hill's Morning Report - Sponsored by Facebook - GOP closes ranks to fill SCOTUS vacancy by November MORE (R-N.C.) and former New Jersey Gov. Chris Christie (R).

Others said to be in the running for the full-time position who have yet to publicly decline the job are former deputy campaign chairman David Bossie and Whitaker, the acting attorney general.

If Trump picks a full-time chief of staff other than Mulvaney, he will have cycled through four top aides in his first two years in office. The position does not require Senate confirmation.

Office of Management and Budget

The White House has confirmed that Mulvaney will continue in his job as budget director even as he serves as the acting chief of staff.

Press secretary Sarah Huckabee Sanders said Deputy Director Russ Vought will handle the agency’s day-to-day operations while Mulvaney works as Trump’s top aide.

Commerce secretary

Wilbur Ross Wilbur Louis RossTrump admin asks Supreme Court to fast-track excluding people in U.S. illegally from census Trump 'very happy' to allow TikTok to operate in US if security concerns resolved TikTok, WeChat to be banned Sunday from US app stores MORE has served in Trump’s Cabinet since the beginning of the administration but has been dogged by reports that the president may replace him.

Potential successors included Small Business Administration head Linda McMahon Linda Marie McMahonApril's dumbest and most dangerous coronavirus declarations Trump convenes sports commissioners in hopes of filling stadiums Senate confirms Trump pick for small business chief MORE, or Overseas Private Investment Corporation President Ray Washburne.

Ross was one of the president’s earliest supporters and an adviser on the campaign trail, but Trump has reportedly mocked his age and energy during White House staff meetings. Ross is 81.

He has also been plagued by multiple ethics complaints about meetings he held with companies he invested in, as well as his failure to divest from stocks he claimed he sold off.

Environmental Protection Agency administrator

Trump has tapped acting Administrator Andrew Wheeler to lead the agency full-time, setting him up as the replacement to scandal-plagued former Administrator Scott Pruitt Edward (Scott) Scott PruittJuan Williams: Swamp creature at the White House Science protections must be enforceable Conspicuous by their absence from the Republican Convention MORE.

Wheeler, a former lobbyist and lawyer for coal companies, previously served as the deputy administrator. He was confirmed to that post by a 53-45 vote.

While his ties to the coal industry have raised concerns among Democrats, Wheeler has avoided the toxic headlines that ultimately doomed Pruitt’s tenure.

Pruitt resigned in July amid mounting ethics scandals that detailed numerous instances of misuse of government funds and resources.

Trump has touted the agency’s efforts to roll back Obama-era regulations on emissions, water protections and coal.

Secretary of Homeland Security

Department of Homeland Security (DHS) Secretary Kirstjen Nielsen Kirstjen Michele NielsenMore than million in DHS contracts awarded to firm of acting secretary's wife: report DHS IG won't investigate after watchdog said Wolf, Cuccinelli appointments violated law Appeals court sides with Trump over drawdown of immigrant protections MORE was reportedly on the outs in the aftermath of the midterms, but she has managed to keep her job even as others around her head for the exits.

Her relationship with Trump has been contentious. The president has singled her out for failures to implement stricter immigration policies, and increases in apprehensions at the southern border late in the year are likely to stoke those frustrations.

Furthermore, Nielsen’s top ally in the West Wing and her predecessor at DHS, John Kelly, is on his way out as chief of staff.

Nielsen has earned Trump’s scorn despite embracing one of his most divisive policies. She defended the administration’s “zero tolerance” policy that led to the separation of thousands of migrant families at the border.

Secretary of State

Mike Pompeo Michael (Mike) Richard PompeoPutin nominated for Nobel Peace Prize The Hill's Morning Report - Sponsored by Facebook - Trump previews SCOTUS nominee as 'totally brilliant' Pompeo accused of stumping for Trump ahead of election MORE has served two roles in Trump’s Cabinet: first as CIA director, and currently as secretary of State.

Pompeo has been a staunch advocate of Trump’s agenda internationally and has been the lead figure in negotiations to denuclearize the Korean Peninsula. Pompeo has made four separate visits to Pyongyang.

Since his confirmation in April, Pompeo has said he hopes to bring a sense of “swagger” back to the State Department. His relationships with other diplomats and his rapport with the president are marked differences from his predecessor, Rex Tillerson.

Tillerson was fired in March after a rocky tenure that resulted in depleted morale and staffing levels at State.

In an interview this month, Tillerson called Trump undisciplined and indicated the president regularly pushed for measures that were illegal. Trump responded by calling Tillerson “dumb as a rock” and “lazy as hell.”

CIA director

Gina Haspel, then the deputy CIA director, was elevated to the agency’s top post in April upon Pompeo’s shift to State.

She became the first woman to head the agency when the Senate voted, 54-45, to confirm her. Her nomination was dominated by discussion over her involvement in an interrogation program conducted during the George W. Bush administration.

Haspel has maintained a low profile in the time since taking office, though she appeared on Capitol Hill earlier this month to brief lawmakers on the killing of Saudi dissident journalist Jamal Khashoggi.

Senators left their meeting with Haspel expressing confidence that Saudi Crown Prince Mohammed bin Salman was responsible for Khashoggi’s death, a connection Trump administration officials had not publicly made.

Treasury secretary

Treasury Secretary Steven Mnuchin Steven Terner MnuchinOn The Money: Anxious Democrats push for vote on COVID-19 aid | Pelosi, Mnuchin ready to restart talks | Weekly jobless claims increase | Senate treads close to shutdown deadline Vulnerable Democrats tell Pelosi COVID-19 compromise 'essential' Pelosi asks panels to draft new COVID-19 relief measure MORE has consistently been one of the most prominent Cabinet officials for a president who ties much of his administration’s image to the economy.

Mnuchin was at the forefront of pushing through the GOP tax-cut bill in late 2017 and has said he plans to spend the upcoming year working on correcting some areas of the legislation.

As the markets sagged toward the end of the year, Trump pushed back on a report that he was unhappy with Mnuchin’s performance.

Mnuchin was reportedly under consideration to replace Kelly as chief of staff.

Secretary of Veterans Affairs

Veterans Affairs (VA) Secretary Robert Wilkie has led the department since July, when he became the second permanent head of the sprawling agency during the Trump administration.

Prior to leading the agency, Wilkie ran military personnel policy at the Pentagon.

The VA has been rife with scandal in recent years over the quality of its care and treatment of veterans. Wilkie himself has recently come under scrutiny for his past ties to pro-Confederate events and symbols.

Wilkie is Trump’s second VA secretary, following David Shulkin David Jonathon ShulkinVA inspector general says former top official steered M contract to friend Schumer demands answers in use of unproven coronavirus drug on veterans Former Trump VA secretary says staffer found plans to replace him in department copier MORE. Trump fired Shulkin in March amid an investigation into alleged misuse of taxpayer funds and reported clashes over privatizing the agency.

Trump initially tapped former White House physician Ronny Jackson for the post, but his nomination was sunk over allegations of professional misconduct.

Secretary of Labor

Secretary of Labor Alex Acosta Alex Alexander AcostaFederal litigator files complaint alleging Labor secretary abused his authority Appeals court to review legality of Epstein plea deal Appeals court finds prosecutors' secret plea agreement with Epstein didn't break law MORE has touted the low unemployment numbers that have rolled in during Trump’s presidency but could soon face some trouble of his own.

A group of Democratic lawmakers have called for an investigation into Acosta’s role in a 2007 plea deal he helped negotiate as U.S. attorney for the Southern District of Florida with an alleged serial sex offender.

Acosta could be summoned to Capitol Hill for hearings when Democrats officially take over the House majority in January.

Acosta has been in good standing with Trump, as he was reported to be in the running for attorney general prior to Trump picking Barr as his nominee.

Health and Human Services Secretary

Health and Human Services (HHS) Secretary Alex Azar was confirmed in early 2018 as Trump’s second official to lead the agency after former Secretary Tom Price Thomas (Tom) Edmunds PriceConspicuous by their absence from the Republican Convention Coronavirus Report: The Hill's Steve Clemons interviews Chris Christie Trump flails as audience dwindles and ratings plummet MORE resigned amid reports that he misused taxpayer funds.

Azar, a former pharmaceutical executive, was criticized by Democrats during his confirmation hearing over his ties to the drug industry and over questions about his views on the Affordable Care Act.

The HHS chief will be a major player in the next session of Congress, as Democrats have identified drug pricing as an area of concern that they intend to tackle.

Secretary of Housing and Urban Development

Housing and Urban Development Secretary Ben Carson Benjamin (Ben) Solomon CarsonState AGs condemn HUD rule allowing shelters to serve people on basis of biological sex Biden cannot keep letting Trump set the agenda The Hill's 12:30 Report: Trump heads to New Hampshire after renomination speech MORE’s job appeared to be in some jeopardy earlier this year when he was embroiled in an ethics scandal over a furniture purchase for his office.

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The former brain surgeon came under fire after it was reported his department spent $31,000 on a new dining set for his office. Carson later announced he had canceled the order and went on to blame his wife for the purchase.

The White House reportedly scolded Carson over the incident, but he appears to have returned to good standing with Trump.

Secretary of Energy

Secretary of Energy Rick Perry Rick PerryEnergy secretary questions consensus that humans cause climate change OVERNIGHT ENERGY: Democrats push resolution to battle climate change, sluggish economy and racial injustice | Senators reach compromise on greenhouse gas amendment stalling energy bill | Trump courts Florida voters with offshore drilling moratorium OVERNIGHT ENERGY: Trump signs major conservation bill into law | Senate votes to confirm Energy's No. 2 official | Trump Jr. expresses opposition to Pebble Mine project MORE has been at the center of Trump's push to maintain coal jobs and promote American energy production.

The former Texas governor, who once said while running for president he wanted to abolish the Department of Energy, has promoted the use of fossil fuels and investment in nuclear energy, despite concerns from environmentalists.

Perry's tenure has not been without controversy, as he endured criticism for comments that appeared to tie fossil fuels to sexual assault prevention, and over his wife's travel.

Some recent reports mentioned that Perry's name was floated as a potential chief of staff pick, though Trump opted to go with Mulvaney on an acting basis.

Secretary of Agriculture

Agriculture Secretary Sonny Perdue George (Sonny) Ervin PerduePerdue has found the right path in National Forests Democrats seek clarity on payroll tax deferral for federal workers USDA extending free meals for kids through end of the year if funding allows after criticism MORE, another Trump appointee who has been in the Cabinet since early 2017, has dealt with the fallout of the president’s tariff policies and his efforts to expand work requirements for government programs.

Perdue has overseen the disbursement of nearly $10 billion in aid to farmers in recent months who have lost profits because of retaliatory tariffs levied on the U.S. in response to the Trump administration’s tariffs.

Republicans and Democrats have criticized the payments as “bailouts,” and suggested the tariff policy is the root issue.

Perdue is also leading a proposal to expand work requirements in the Supplemental Nutrition Assistance Program, he announced earlier this month.

Transportation Secretary

Transportation Secretary Elaine Chao Elaine Lan ChaoChick-fil-A drops fight for San Antonio airport location Overnight Defense: US marks 19th anniversary of 9/11 attacks | Trump awards Medal of Honor to Army Ranger for hostage rescue mission | Bahrain, Israel normalizing diplomatic ties Trump marks 9/11 with moment of silence on Air Force One, remarks in PA MORE is likely to play a key role in the next session of Congress should Democrats and the White House seek a deal on infrastructure.

Infrastructure is one area where Democrats may be able to find common ground with the administration. There is some reason for skepticism, as Trump indicated on the campaign trail he hoped to pass an infrastructure package, only to see that effort stall in Congress.

Chao is married to Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellTrump 'no longer angry' at Romney because of Supreme Court stance On The Money: Anxious Democrats push for vote on COVID-19 aid | Pelosi, Mnuchin ready to restart talks | Weekly jobless claims increase | Senate treads close to shutdown deadline The Hill's Campaign Report: Trump faces backlash after not committing to peaceful transition of power MORE (R-Ky.).

Small Business Administration

Linda McMahon has led the agency tasked with bolstering financing and resources for small businesses since she was easily confirmed in February 2017.

The World Wrestling Entertainment co-founder and former CEO has had an uncontroversial tenure thus far. She has been reported as a possible replacement for Ross, the Commerce secretary.

U.S. Trade Representative

Trump has made trade a cornerstone of his economic agenda, placing U.S. Trade Representative Robert Lighthizer Robert (Bob) Emmet LighthizerWhiskey, workers and friends caught in the trade dispute crossfire GOP senator warns quick vote on new NAFTA would be 'huge mistake' Pelosi casts doubt on USMCA deal in 2019 MORE squarely in the spotlight.

The 71-year-old was involved in talks with Canada and Mexico to renegotiate the North American Free Trade Agreement, which Trump had dubbed one of the worst deals of all time. The countries reached an agreement on the revised U.S.-Mexico-Canada Agreement in October, though Congress must still ratify the deal.

Lighthizer has been similarly prominent in ongoing negotiations with China over tariffs. The Trump administration and Beijing have exchanged billions in tariffs on the other country’s imports, despite objections from many lawmakers.

Lighthizer was reportedly under consideration to replace Kelly as chief of staff, but indicated he preferred to stay in his current role.

Director of National Intelligence

Director of National Intelligence Dan Coats Daniel (Dan) Ray CoatsFBI chief says Russia is trying to interfere in election to undermine Biden The Hill's Morning Report - Sponsored by The Air Line Pilots Association - Trump, Biden renew push for Latino support Former Intel chief had 'deep suspicions' that Putin 'had something on Trump': book MORE has been a central figure in the administration’s efforts to push back on foreign meddling in U.S. elections, and has been willing to publicly break with Trump when the president has cast doubt on the intelligence community’s findings that Russia meddled in the 2016 election.

Prior to Trump’s much-maligned July meeting with Russian President Vladimir Putin in Helsinki, Coats warned that lights were “blinking red” to indicate Russia was preparing a cyberattack against the U.S.

Weeks after Trump’s meeting, Coats told reporters he was “not in a position to either fully understand or talk about what happened” between the two leaders.

Coats is likely to remain a key player within the Cabinet as the focus on election security shifts to the 2020 campaign.

Education Secretary

Education Secretary Betsy DeVos Elizabeth (Betsy) Dee DeVosSpecial counsel investigating DeVos for potential Hatch Act violation: report NEA president says Azar and DeVos should resign over school reopening guidance The Hill's 12:30 Report - Presented by Facebook - You might want to download TikTok now MORE was a controversial pick due to her support for charter schools, and required an unprecedented tie-breaking vote from Vice President Pence to be confirmed in February 2017.

Since then, DeVos’s tenure has been highlighted by numerous efforts to dial back Obama-era policies on student loan regulations, penalties aimed at for-profit colleges, campus sexual assault rules and more.

She was also appointed to lead Trump’s school safety commission that was created in the wake of a mass shooting at a Parkland, Fla., high school. The commission’s final report did not call for raising the age requirement to purchase a firearm, but supported laws that allow guns to be taken away from dangerous individuals and an increased focus on mental health.

Vice President

Vice president is an elected position and cannot be removed from the Cabinet by the president. Trump has said Pence will remain on as his running mate in 2020.