President Donald Trump's first three weeks in office were filled with a flurry of action, and he's just getting started.

The 45th president has signed 25 executive actions so far, with far-reaching effects on Americans' lives.

While many of them have been billed as executive orders in the popular vernacular, most of them were technically presidential memoranda or proclamations.

The three types of executive actions have different authority and effects, with executive orders holding the most prestige:

Executive orders are assigned numbers and published in the federal register, similar to laws passed by Congress, and typically direct members of the executive branch to follow a new policy or directive.

Presidential memoranda do not have to be published or numbered (though they can be), and usually delegate tasks that Congress has already assigned the president to members of the executive branch.

Finally, while some proclamations — like President Abraham Lincoln's emancipation proclamation — have carried enormous weight, most are ceremonial observances of federal holidays or awareness months.

Scholars have typically used the number of executive orders per term to measure how much presidents have exercised their power. George Washington only signed eight his entire time in office, according to the American Presidency Project, while FDR penned over 3,700.

In his two terms, President Barack Obama issued 277 executive orders, a total number on par with his modern predecessors, but the lowest per year average in 120 years. Trump, so far, has signed 11 executive orders.

Here's a quick guide to the executive actions Trump has made so far, what they do, and how Americans have reacted to them:

Executive Order, February 9: Combating criminal organizations

The order is intended to "thwart" criminal organizations, including "criminal gangs, cartels, racketeering organizations, and other groups engaged in illicit activities."

The action directs law enforcement to apprehend and prosecute citizens, and deport non-citizens involved in criminal activities including "the illegal smuggling and trafficking of humans, drugs or other substances, wildlife, and weapons," "corruption, cybercrime, fraud, financial crimes, and intellectual-property theft," and money laundering

The Secretary of State, Attorney General, Secretary of Homeland Security, and Director of National Intelligence will co-chair a Threat Mitigation Working Group that will identify ways that local, state, federal, and international law enforcement can work together in order to eradicate organized crime.

It also instructs the co-chairs to present the president with a report within 120 days outlining the penetration of criminal organizations into the United States, and recommendations for how to eradicate them.

Executive Order, February 9: Reducing crime

Following up on his promise to restore "law and order" in America, Trump signed an executive order intended to reduce violent crime in the US, and "comprehensively address illegal immigration, drug trafficking, and violent crime."

The action directs Attorney General Jeff Sessions to assemble a task force in order to identify new strategies and laws to reduce crime, and to evaluate how well crime data is being collected and leveraged across the country.

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Trump has come under fire recently for claiming the national murder rate was at an all-time high, when it has in fact dropped to one of the lowest rates ever, with 2015 merely experiencing a slight uptick from the previous year.

Executive Order, February 9: Protecting law enforcement

The order seeks to create new laws that will protect law enforcement, and increase the penalties for crimes committed against them.

It also directs the attorney general to review existing federal grant funding programs to law enforcement agencies, and recommend changes to the programs if they don't adequately protect law enforcement.

The action is likely in response to multiple high-profile police killings over the past year, including a sniper attack that killed five Dallas police officers in July.

Executive Order, February 3: Reviewing Wall Street regulations

Trump signed two actions on Friday that could end up rewriting regulations in the financial industry that Obama and Congress put in place after the 2008 financial crisis.

The executive order sets "Core Principles" of financial regulation declaring that Trump's administration seeks to empower Americans to make their own financial decisions, prevent taxpayer-funded bailouts, and reduce regulations on Wall Street so US companies can compete globally.

It also directs the Secretary of Treasury to review existing regulations on the financial system, determine whether the Core Principles are being met, and report back to the President in 120 days.

Experts worry that loosening regulations could roll back the Obama administration's landmark consumer protection reform bill, Dodd-Frank, aimed at reducing risk in the financial system. Sen. Elizabeth Warren, the progressive darling from Massachusetts, led the charge decrying the actions.

Presidential Memorandum, February 3: Reviewing the fiduciary duty rule

The memorandum directs the Treasury Secretary to review the "fiduciary rule," another Obama-era law intended to protect Americans' retirement money from conflicted advice from financial advisers that has long drawn rebuke from Wall Streeters and was scheduled to go into effect in April.

If the secretary finds the rule conflicts with the administration's Core Principles, adversely affects the retirement industry, or causes increased litigation, then he should recommend revising or repealing the rule.

Democratic lawmakers and 38-million-member retiree nonprofit AARP came out against the action.

Presidential proclamation, February 2: American Heart Month

This ceremonial proclamation invited Americans to wear red on Friday, February 3, 2017 for National Wear Red Day, and followed Congress' request in 1963 for presidents to annually declare February American Heart Month. The goal is to remember those who have died from heart disease and to improve its prevention, detection, and treatment.

Executive Order, January 30: For every new regulation proposed, repeal two existing ones

The order states that for every one regulation the executive branch proposes, two must be identified to repeal. It also caps the spending on new regulations for 2017 at $0.

Some environmental groups expressed concern that the order could undo regulations put in place to protect natural resources.

Executive Order, January 28: Drain the swamp

The order requires appointees to every executive agency to sign an ethics pledge saying they will never lobby a foreign government and that they won't do any other lobbying for five years after they leave government.

But it also loosened some ethics restrictions that Obama put in place, decreasing the number of years executive branch employees had to wait since they had last been lobbyists from two years to one.

Presidential Memorandum, January 28: Reorganizing the National and Homeland Security Councils

Trump removed the nation's top military and intelligence advisers as regular attendees of the National Security Council's Principals Committee, the interagency forum that deals with policy issues affecting national security.

The executive measure established Trump's chief strategist, Steve Bannon, as a regular attendee, and disinvited the chairman of the Joint Chiefs of Staff and the Director of National Intelligence to attend only when necessary.

Top Republican lawmakers and national security experts roundly criticized the move, expressing their skepticism that Bannon should be present and alarm that the Joint Chiefs of Staff sometimes wouldn't be.

Presidential Memorandum, January 28: Defeating ISIS

Making a point to use the phrase "radical Islamic terrorism" (something Trump criticized Obama for on the campaign trail), Trump directed his administration "to develop a comprehensive plan to defeat ISIS," drafted within 30 days.

Executive Order, January 27: Immigration ban

In Trump's most controversial executive action yet, he temporarily barred people from majority-Muslim Iran, Iraq, Libya, Somalia, Sudan, and Yemen from entering the country for 90 days, and Syrians from entering until he decides otherwise.

Federal judges in several states declared the order unconstitutional, releasing hundreds of people who were stuck at US airports in limbo. The White House continues to defend the action, insisting it was "not about religion" but about "protecting our own citizens and border."

Tens of thousands of people protested the action in cities and airports across the US, company executives came out against the order, and top Republicans split with their president to criticize Trump's approach.

Presidential Memorandum, January 27: 'Rebuilding' the military

This action directed Secretary of Defense James Mattis to conduct a readiness review of the US military and Ballistic Missile Defense System, and submit his recommendations to "rebuild" the armed forces.

Presidential proclamation, January 26: National School Choice Week

Trump proclaimed January 22 through January 28, 2017 as National School Choice Week.

The ceremonial move aimed to encourage people to demand school-voucher programs and charter schools, of which Trump's Secretary of Education nominee Betsy DeVos is a vocal supporter. Meanwhile, opponents argue that the programs weaken public schools and fund private schools at taxpayers' expense.

Executive Order, January 25: Build the wall

Trump outlined his intentions to build a wall along the US border with Mexico, one of his main campaign promises.

The order also directs the immediate detainment and deportation of illegal immigrants, and requires state and federal agencies tally up how much foreign aid they are sending to Mexico within 30 days, and tells the US Customs and Border Protection to hire 5,000 additional border patrol agents.

While Trump has claimed Mexico will pay for the wall, his administration has since softened this pledge, indicating US taxpayers may have to foot the bill, at least at first.

Executive Order, January 25: Cutting funding for sanctuary cities

Trump called "sanctuary cities" to comply with federal immigration law or have their federal funding pulled.

The order has prompted a mixture of resistance and support from local lawmakers and police departments in the sanctuary cities, which typically refuse to honor federal requests to detain people on suspicion of violating immigration law even if they were arrested on unrelated charges. The city of San Francisco is already suing Trump, claiming the order is unconstitutional.

Executive Order, January 24: Expediting environmental review for infrastructure projects

The order allows governors or heads of federal agencies to request an infrastructure project be considered "high-priority" so it can be fast-tracked for environmental review.

Trump signed the order as a package infrastructure deal, along with three memoranda on oil pipelines.

3 Presidential Memoranda, January 24: Approving pipelines

Trump signed three separate memoranda set to expand oil pipelines in the United States, a move immediately decried by Native American tribes, Democrats, and activists.

The controversial orders Donald Trump has already issued Show all 9 1 /9 The controversial orders Donald Trump has already issued The controversial orders Donald Trump has already issued Trump and the media White House Press Secretary Sean Spicer takes questions during the daily press briefing Getty Images The controversial orders Donald Trump has already issued Trump and the Trans-Pacific Partnership Union leaders applaud US President Donald Trump for signing an executive order withdrawing the US from the Trans-Pacific Partnership negotiations during a meeting in the Roosevelt Room of the White House in Washington DC. Mr Trump issued a presidential memorandum in January announcing that the US would withdraw from the trade deal Getty The controversial orders Donald Trump has already issued Trump and the Mexico wall A US Border Patrol vehicle sits waiting for illegal immigrants at a fence opening near the US-Mexico border near McAllen, Texas. The number of incoming immigrants has surged ahead of the upcoming Presidential inauguration of Donald Trump, who has pledged to build a wall along the US-Mexico border. A signature campaign promise, Mr Trump outlined his intention to build a border wall on the US-Mexico border days after taking office Getty Images The controversial orders Donald Trump has already issued Trump and abortion US President Donald Trump signs an executive order as Chief of Staff Reince Priebus looks on in the Oval Office of the White House. Mr Trump reinstated a ban on American financial aide being granted to non-governmental organizations that provide abortion counseling, provide abortion referrals, or advocate for abortion access outside of the United States Getty Images The controversial orders Donald Trump has already issued Trump and the Dakota Access pipeline Opponents of the Keystone XL and Dakota Access pipelines hold a rally as they protest US President Donald Trump's executive orders advancing their construction, at Columbus Circle in New York. US President Donald Trump signed executive orders reviving the construction of two controversial oil pipelines, but said the projects would be subject to renegotiation Getty Images The controversial orders Donald Trump has already issued Trump and 'Obamacare' Nancy Pelosi who is the minority leader of the House of Representatives speaks beside House Democrats at an event to protect the Affordable Care Act in Los Angeles, California. US President Donald Trump's effort to make good on his campaign promise to repeal and replace the healthcare law failed when Republicans failed to get enough votes. Mr Trump has promised to revisit the matter Getty Images The controversial orders Donald Trump has already issued Donald Trump and 'sanctuary cities' US President Donald Trump signed an executive order in January threatening to pull funding for so-called "sanctuary cities" if they do not comply with federal immigration law AP The controversial orders Donald Trump has already issued Trump and the travel ban US President Donald Trump has attempted twice to restrict travel into the United States from several predominantly Muslim countries. The first attempt, in February, was met with swift opposition from protesters who flocked to airports around the country. That travel ban was later blocked by the Ninth Circuit Court of Appeals. The second ban was blocked by a federal judge a day before it was scheduled to be implemented in mid-March SANDY HUFFAKER/AFP/Getty Images The controversial orders Donald Trump has already issued Trump and climate change US President Donald Trump sought to dismantle several of his predecessor's actions on climate change in March. His order instructed the Environmental Protection Agency to reevaluate the Clean Power Plan, which would cap power plant emissions Shannon Stapleton/Reuters

The first two direct agencies to immediately review and approve construction of the Dakota Access Pipeline and the Keystone XL Pipeline, and the third requires all pipeline materials be built in the US.

While pipeline proponents argue that they transport oil and gas more safely than trains or trucks can, environmentalists say pipelines threaten the contamination of drinking water.

Presidential Memorandum, January 24: Reduce regulations for US manufacturing

Trump directed his Secretary of Commerce to review how federal regulations affect US manufacturers, with the goal of figuring out how to reduce them as much as possible.

Presidential Memorandum, January 23: Reinstating the 'Mexico City policy'

The move reinstated a global gag rule that bans American non-governmental organizations working abroad from discussing abortion.

Democratic and Republican presidents have taken turns reinstating it and getting rid of it since Ronald Reagan created the gag order in 1984. The rule, while widely expected, dismayed women's rights and reproductive health advocates, but encouraged antiabortion activists.

Presidential Memorandum, January 23: Hiring Freeze

Trump froze all hiring in the executive branch excluding the military, directing no vacancies be filled, in an effort to cut government spending and bloat.

Union leaders called the action "harmful and counterproductive," saying it would "disrupt government programs and services that benefit everyone."

Presidential Memorandum, January 23: Out of the TPP

This action signaled Trump's intent to withdraw from the Trans Pacific Partnership, a trade deal that would lower tariffs for 12 countries around the Pacific Rim, including Japan and Mexico but excluding China.

Results were mixed. Sen. Bernie Sanders said he was "glad the Trans-Pacific Partnership is dead and gone," while Republican Sen. John McCain said withdrawing was a "serious mistake."

Executive Order, January 20: Declaring Trump's intention to repeal the Affordable Care Act

One of Trump's top campaign promises was to repeal and replace the Affordable Care Act, commonly called Obamacare.

His first official act in office was declaring his intention to do so. Congressional Republicans have been working to do just that since their term started January 3, though there's dissent among Republicans over whether or not to complete the repeal process before a replacement plan is finalized and strident Democratic resistance to any repeal of the ACA.

Presidential Memorandum, January 20: Reince's regulatory freeze

Trump's Chief of Staff Reince Priebus signed this action, directing agency heads not to send new regulations to the Office of the Federal Register until the administration has leaders in place to approve them.

Obama's Chief of Staff Rahm Emanuel signed a similar memorandum when he took office in 2009, but as Bloomberg notes, Priebus changed the language from a suggestion to a directive.

The action is partly carried out to make sure the new administration wants to implement any pending regulations the old one was considering. Environmentalists worried if this could mean Trump is about to undo many of Obama's energy regulations.

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