Sen. Elizabeth Warren of Massachusetts became the first 2020 presidential candidate to come out in favor of impeachment shortly after the release of the Mueller report.
Sen. Kamala Harris of California also said the House should start "taking steps towards impeachment" after the Mueller report's release.
Former HUD Secretary and 2020 candidate Julián Castro also said it would be "perfectly reasonable" for Congress to begin impeachment proceedings.
Rep. Eric Swalwell, a member of the House Intelligence and Judiciary Committees, as well as a 2020 candidate, supports impeaching Trump and Attorney General Bill Barr.
next slide will load in 15 secondsSkip AdSkip AdRep. Seth Moulton of Massachusetts, also a 2020 candidate, supports impeachment inquiries into both Trump and Barr.
Former Rep. Beto O'Rourke of Texas, also seeking the 2020 Democratic nomination, came out in favor of beginning impeachment proceedings at a May 21 CNN town hall.
In the House, Rep. Al Green became one of the very first Democrats to put forth impeachment articles back in 2017 with four other Democrats, but their resolution to impeach Trump was rejected.
Rep. Steve Cohen of Tennessee was one of the co-sponsors of Green's impeachment resolution.
Rep. Marcia Fudge of Ohio also co-sponsored the 2017 impeachment resolution.
next slide will load in 15 secondsSkip AdSkip AdRep. Adriano Espaillat of New York also co-sponsored Green's 2017 impeachment articles.
Rep. Maxine Waters of California, the chairwoman of the House Financial Services Committee, has also been a long-time supporter of impeaching Trump.
In March of this year, freshman Rep. Rashida Tlaib of Michigan introduced her own resolution to impeach Trump with Green as a co-sponsor.
Rep. Alexandria Ocasio-Cortez of New York became a co-sponsor of Tlaib's resolution in April and, tweeted on Tuesday that "failure to impeach now is neglect of due process."
Rep. Ilhan Omar of Minnesota is also a cosponsor of Tlaib's resolution and recently tweeted "it’s time Democrats open an impeachment inquiry against the current occupant of the White House."
next slide will load in 15 secondsSkip AdSkip AdRep. Ayanna Pressley of Massachusetts also co-sponsored Tlaib's resolution and recently told MSNBC, "I didn't come to Congress to impeach a president...but I believe we have no other choice. Our hand is being forced."
Rep. Filemon Vela of Texas became a co-sponsor of Tlaib's resolution in late April.
Rep. Jared Huffman of California also co-sponsored Tlaib's resolution in April.
Rep. David Cicilline of Rhode Island came out in support of impeachment after Don McGahn defied a subpoena from the House Judiciary Committee.
Rep. Jamie Raskin of Maryland, a constitutional law professor at American University and a member of the House leadership team, said he supports impeaching Trump in a recent interview with the Washington Post, saying "the logic of an impeachment inquiry is pretty overwhelming at this point."
next slide will load in 15 secondsSkip AdSkip AdRep. Veronica Escobar of Texas also supports impeachment, writing on Twitter that "we cannot tolerate this level of obstruction."
House Budget Committee Chairman Rep. John Yarmuth of Kentucky supports impeachment and told CNN he believes "a growing majority of our caucus believes that impeachment is going to be inevitable."
Rep. Joaquin Castro of Texas tweeted Tuesday, "It’s time for Congress to open an impeachment inquiry. There is political risk in doing so, but there’s a greater risk to our country in doing nothing."
Rep. Mary Gay Scanlon of Pennsylvania, a member of the Judiciary Committee, came out in support of impeachment on Tuesday.
Rep. Madeline Dean, also of Pennsylvania, said Tuesday "we must open an impeachment inquiry."
next slide will load in 15 secondsSkip AdSkip AdRep. Dwight Evans, also of Pennsylvania, wrote "I'm ready to vote in FAVOR of the House of Representatives beginning an impeachment inquiry of President Trump" on Wednesday.
Rep. Pramila Jayapal of Washington called for impeachment on May 21, saying, "A president who thinks he's king, accountable to nobody & above the law is absolutely unacceptable."
Rep. Mark Pocan of Wisconsin called for impeachment after McGahn's no-show for his May 21 hearing.
Rep. Joe Neguse of Colorado, a co-freshman representative to leadership, wrote May 21 that "the Administration’s pattern of wholesale obstruction of Congress since the report’s release, make clear that it is time to open an impeachment inquiry."
Rep. Diana DeGette, also of Colorado, came out in favor of impeachment on May 21, writing, "the facts laid out in the Mueller report, coupled with this administration’s ongoing attempts to stonewall Congress, leave us no other choice."
next slide will load in 15 secondsSkip AdSkip AdRep. Val Demings of Florida said she believes "that we're at a point where we've run out of options and I think we should begin impeachment proceedings."
Rep. Earl Blumenauer of Oregon came out in favor of impeachment on May 21, writing "Trump continues to disrespect the power of Congress, the rule of law, and our democracy."
Rep. Don Beyer of Virginia wrote May 21 that he supports impeaching Trump, writing "endorsing such a course is not easy ... but I believe the President has left Congress no other option but to pursue it" in a statement.
Rep. Jackie Speier of California told CNN on Tuesday she believes "an inquiry into impeachment is required at this point in time."
"Congress has a moral obligation to put our politics aside and take action," Rep. Kathleen Rice of New York tweeted Tuesday. "We need to start impeachment proceedings."
next slide will load in 15 secondsSkip AdSkip AdFreshman Rep. Tom Malinowski of New Jersey came out in support of impeachment in an interview with NBC News, saying, "The law can survive the efforts of bad people to defy it. The law cannot survive the hesitation of good people to defend it."