Speaker Nancy Pelosi Nancy PelosiPowell warns failure to reach COVID-19 deal could 'scar and damage' economy Overnight Defense: House to vote on military justice bill spurred by Vanessa Guillén death | Biden courts veterans after Trump's military controversies Intelligence chief says Congress will get some in-person election security briefings MORE (D-Calif.) is likely to decide in the coming days whether to send the articles of impeachment to the Senate as the upper chamber remains in a stalemate over how to conduct a trial.

Both sides have dug in more than two weeks after the House passed the articles of impeachment against President Trump Donald John TrumpBarr criticizes DOJ in speech declaring all agency power 'is invested in the attorney general' Military leaders asked about using heat ray on protesters outside White House: report Powell warns failure to reach COVID-19 deal could 'scar and damage' economy MORE over his dealings with Ukraine and his efforts to undermine lawmakers’ inquiry.

Pelosi withheld the articles to gain leverage in the debate over the trial’s rules, but there’s little sign the maneuver is putting any pressure on Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellSenate Republicans signal openness to working with Biden Hillicon Valley: DOJ indicts Chinese, Malaysian hackers accused of targeting over 100 organizations | GOP senators raise concerns over Oracle-TikTok deal | QAnon awareness jumps in new poll The Hill's Campaign Report: Biden asks if public can trust vaccine from Trump ahead of Election Day | Oklahoma health officials raised red flags before Trump rally MORE (R-Ky.).

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At least two key moderate Republicans have expressed concerns about McConnell’s coordination with the White House on impeachment strategy, but none have made any specific demands.

While Pelosi and McConnell both kept low profiles over the holidays, Senate Minority Leader Charles Schumer (D-N.Y.), has held multiple press conferences from New York to call for testimony from key witnesses and production of documents from the Trump administration.

The effort appears to be an attempt to put pressure on McConnell, and to set up the argument that Republicans are organizing a sham trial in the Senate.

Schumer this week seized upon a New York Times report detailing how top officials knew of the hold on the military aid to Ukraine. Bolton, Secretary of State Mike Pompeo Michael (Mike) Richard PompeoThe Hill's Morning Report - Sponsored by The Air Line Pilots Association - Pence lauds Harris as 'experienced debater'; Trump, Biden diverge over debate prep Trump's foreign policy successes confound his detractors It's time for a Jackson-Vanik Amendment for China MORE and Secretary of Defense Mark Esper Mark EsperOvernight Defense: Trump hosts Israel, UAE, Bahrain for historic signing l Air Force reveals it secretly built and flew new fighter jet l Coronavirus creates delay in Pentagon research for alternative to 'forever chemicals' Oldest living US World War II veteran turns 111 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 MORE tried but failed to convince Trump in a previously undisclosed Oval Office meeting that releasing the aid was in America’s national security interest.

Schumer called the New York Times report a “game changer.”

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“This story makes the choice even clearer: Will the Senate hold a fair trial, or will it enable a cover-up?” Schumer said at a Monday press conference. “President Trump, if you are so confident you did nothing wrong: why won’t you let your men testify? What are Sen. McConnell and President Trump afraid of if all the facts come out?”

Schumer also hailed new emails published by Just Security on Thursday that showed Defense Department officials' alarm over the hold on the nearly $400 million in military aid to Ukraine as a "devastating blow." One email from late August showed Michael Duffey, associate director of national security at the Office of Management and Budget, telling the acting Pentagon comptroller: “Clear direction from POTUS to hold.”

Schumer is pressing for testimony from four witnesses who declined to appear in the House impeachment inquiry: acting White House chief of staff Mick Mulvaney Mick MulvaneyMick Mulvaney to start hedge fund Fauci says positive White House task force reports don't always match what he hears on the ground Bottom line MORE, senior Mulvaney adviser Robert Blair, former national security adviser John Bolton John BoltonThe Hill's Morning Report - Sponsored by The Air Line Pilots Association - Pence lauds Harris as 'experienced debater'; Trump, Biden diverge over debate prep DOJ launches probe into Bolton book for possible classified information disclosures Gary Cohn: 'I haven't made up my mind' on vote for president in November MORE and Duffey.

Lawmakers predicted that the impeachment process will fully kick back into gear next week when both chambers of Congress come back into session. But so far both parties have spent recent days holding ever more tightly to their positions.

Rank-and-file Democrats are supportive of Pelosi’s strategy, but holding the articles indefinitely could pose risks for moderates who don’t want the impeachment process to drag on deep into an election year.

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Rep. Elissa Slotkin Elissa SlotkinOvernight Defense: House chair announces contempt proceeding against Pompeo | Top general says military has no role in election disputes | Appeal court rejects due process rights for Gitmo detainees Top general: Military will play no role in resolving any electoral dispute Pelosi weighing bringing House back from August recess early over USPS issues: reports MORE (D-Mich.), a freshman who represents a district that Trump carried in 2016, said before the recess that holding the articles temporarily seemed reasonable.

“I think that it can't drag on forever,” Slotkin told reporters in the Capitol. “But I think it's all right to ask for the process and what it will actually look like when it hits the Senate.”

Pelosi’s decision has got under the skin of Trump, who has repeatedly criticized it over the holidays from his Mar-a-Lago estate.

“Remember when Pelosi was screaming that President Trump is a danger to our nation and we must move quickly,” Trump wrote in a Dec. 31 tweet criticizing Pelosi as reversing her call for impeachment to be conducted in a timely fashion.

“They produced no case so now she doesn’t want to go to the Senate. She’s all lies. Most overrated person I know!”

Democrats will want to show that they’ve achieved something by holding the articles.

“Simply saying that it's urgent and moving in the House based on that urgency and then handing it over to a Senate that will simply dismiss this and not really deal with it in a fair and open fashion doesn't address the urgency of the situation,” Rep. Dan Kildee Daniel (Dan) Timothy KildeeDemocrats set to hold out for big police reform More than 100 Democrats press Trump to extend jobless benefits Pelosi makes fans as Democrat who gets under Trump's skin MORE (D-Mich.) said on CNN's “New Day.”

Others predicted that there will be more movement next week when lawmakers return to Washington.

“I suspect the first week of January you'll see all of this ironed out. And then Speaker Pelosi will be in an appropriate position to be able to say, OK, here's what we're looking for. Here's the kind of managers that will be best suited for those kinds of witnesses and the documents and the questions that are inevitably going to be asked,” Rep. John Garamendi John Raymond GaramendiWuhan is the final straw: The world needs to divest from China GOP seizes on 'defund the police' to galvanize base Peace Corps faces uncertain future with no volunteers in field MORE (D-Calif.) said on “CNN Newsroom.”

Then there’s the fact that the first presidential primary contest is now only a month away. Many Democrats said throughout the impeachment inquiry that they hoped for the process to wrap up by the Iowa presidential caucuses on Feb. 3.

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Five candidates for the Democratic presidential nomination have a personal stake in that as well: Sens. Bernie Sanders Bernie SandersSenate Republicans signal openness to working with Biden Hillicon Valley: DOJ indicts Chinese, Malaysian hackers accused of targeting over 100 organizations | GOP senators raise concerns over Oracle-TikTok deal | QAnon awareness jumps in new poll Schumer, Sanders call for Senate panel to address election security MORE (I-Vt.), Elizabeth Warren Elizabeth WarrenNo new taxes for the ultra rich — fix bad tax policy instead Democrats back away from quick reversal of Trump tax cuts It's time for newspapers to stop endorsing presidential candidates MORE (D-Mass.), Amy Klobuchar Amy KlobucharEPA delivers win for ethanol industry angered by waivers to refiners It's time for newspapers to stop endorsing presidential candidates Biden marks anniversary of the Violence Against Women Act, knocks Trump and McConnell MORE (D-Minn.), Cory Booker Cory Anthony BookerDemocratic lawmakers call for an investigation into allegations of medical neglect at Georgia ICE facility Black Voters Matter Fund deploying voter outreach caravans in 12 states to drive turnout Philanthropist Susan Sandler investing 0M in social justice organizations MORE (D-N.J.) and Michael Bennet Michael Farrand BennetOVERNIGHT ENERGY: House Democrats tee up vote on climate-focused energy bill next week | EPA reappoints controversial leader to air quality advisory committee | Coronavirus creates delay in Pentagon research for alternative to 'forever chemicals' Senate Democrats demand White House fire controversial head of public lands agency Next crisis, keep people working and give them raises MORE (D-Colo.) will be kept off the campaign trail during the impeachment trial.

McConnell, who is up for reelection next year and is seeking to protect the GOP’s majority in the Senate, will be watching what his colleagues say closely.

Sen. Lisa Murkowski Lisa Ann MurkowskiGOP ramps up attacks on Democrats over talk of nixing filibuster OVERNIGHT ENERGY: House Democrats tee up vote on climate-focused energy bill next week | EPA reappoints controversial leader to air quality advisory committee | Coronavirus creates delay in Pentagon research for alternative to 'forever chemicals' House Democrats tee up vote on climate-focused energy bill next week MORE (R-Alaska) said last week that she was “disturbed” about McConnell’s pledge to maintain coordination with the White House over the trial.

“To me, it means that we have to take that step back from being hand in glove with the defense, and so I heard what Leader McConnell had said, I happened to think that that has further confused the process,” Murkowski told KTUU.

Sen. Susan Collins Susan Margaret CollinsThe Hill's Campaign Report: Biden asks if public can trust vaccine from Trump ahead of Election Day | Oklahoma health officials raised red flags before Trump rally Gideon leads Collins by 12 points in Maine Senate race: poll Senate leaders quash talk of rank-and-file COVID-19 deal MORE (R-Maine), who faces a reelection context next year in a state where Trump lost thee of the four electoral votes to Democrat Hillary Clinton Hillary Diane Rodham ClintonBarr criticizes DOJ in speech declaring all agency power 'is invested in the attorney general' Virginia Democrat blasts Trump's 'appalling' remark about COVID-19 deaths in 'blue states' The Hill's Campaign Report: Biden asks if public can trust vaccine from Trump ahead of Election Day | Oklahoma health officials raised red flags before Trump rally MORE, said that senators should not “prejudge” the evidence and appeared to criticize McConnell as well while also taking a shot at Warren.

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“I have heard Democrats like Elizabeth Warren saying that the president should be impeached, found guilty and removed from office. I've heard the Senate majority leader saying that he's taking his cues from the White House. There are senators on both sides of the aisle, who, to me, are not giving the appearance of and the reality of judging that's in an impartial way,” Collins told Maine Public Radio.

Collins also said that she was “open” to witnesses, but appeared to back McConnell’s idea that a decision on who should testify should wait until after both sides present opening arguments.

But one member of Senate GOP leadership predicted that the impeachment trial would be “pretty predictable” and happen “quickly.”

Sen. Roy Blunt Roy Dean BluntOn The Money: Trump undercuts GOP, calls for bigger COVID-19 relief package | Communities of color hit hardest financially by COVID-19 | Businesses, states pass on Trump payroll tax deferral Trump undercuts GOP, calls for bigger COVID-19 relief package Businesses, states pass on Trump payroll tax deferral MORE (R-Mo.) told Missouri radio station KSSZ that he expected that the trial would be finished by the time Trump comes to Capitol Hill to deliver his State of the Union address on Feb. 4.

“My guess is we'll be done with this by the time the president comes,” Blunt said.