U.S. Reps. Charlie Crist and Kathy Castor said Tuesday that the House of Representatives should begin impeachment proceedings against President Donald Trump.

“Trump has violated his oath of office,” Castor, of Tampa, said in a statement. "He operates for himself, in his personal interest – and not in the interest of the American people. The impeachment inquiry should be put on the fast track and all of the facts made plain. My GOP colleagues are inexplicably silent in the face of the damage to the country emanating out of the White House.”

Crist said he did “not reach this conclusion lightly” but, “the People’s House must deliver on that fundamental American value that no one – not even the President – is above the law.”

The two Tampa Bay representatives were among the Congressional Democratic holdouts who had yet to publicly urge House Speaker Nancy Pelosi to take this step. But that ended after the latest reports that President Donald Trump withheld military aid to Ukraine while pressuring the country’s leader to investigate former vice president Joe Biden, a political rival.

There are multiple reports that Pelosi will hold a press conference later Tuesday, in which she may announce a new investigation, or even an impeachment inquiry.

RELATED: What we know, what we don’t about Trump’s Ukraine call, a whistleblower and the Bidens

As of this morning, there were 147 of 235 House Democrats calling for an impeachment inquiry, according to CNN. Many have since announced that they are ready to start that process, citing the latest developments in Ukraine as a step too far.

Others, like U.S. Rep. Stephanie Murphy, a Winter Park Democrat, remain on the fence.

Similar to how a select committee was established during Watergate, the Speaker should appoint a bipartisan select committee to immediately investigate abuse of executive power. We must uncover all the facts and provide answers to the American people. — Rep. Stephanie Murphy (@RepStephMurphy) September 24, 2019

Read the full statements from Crist and Castor below.

U.S. Rep. Charlie Crist:

“Reports detailing the whistleblower complaint and the President’s subsequent admission make it clear that the President has endangered America’s national security for his own political gain. Pressuring a vulnerable, sovereign nation to dig up dirt on a political adversary while dangling Congressionally mandated military aid is not only blatantly unethical and unbecoming of the highest office in the land – it is a crime against the Constitution.

“The President is acting like he believes he is above the rule of law. He is not. President Adams called our Republic, ‘a government of laws, not of men.’ The People’s House must deliver on that fundamental American value that no one – not even the President – is above the law.

“Today, I join the People of Florida’s 13th Congressional District in calling for the House to launch formal impeachment proceedings against President Trump. I do not reach this conclusion lightly. The urgency of accountability is laid bare by the President’s ongoing willingness to abuse the immense power of the Office of the United States President. Someone who believes there is nothing wrong with soliciting foreign interference in American elections – again – can cause unthinkable harm to our national security, our country, and our Constitution during the remaining 15 months of his term in office.

“The American people expect my colleagues on both sides of the aisle and both sides of the Capitol to put partisanship and political expediency aside to do the right thing for the People and for our Constitution. It is time to act.”

U.S. Rep. Kathy Castor:

“The House is proceeding in a deliberate manner to gather the evidence of corruption and of obstruction of justice by the president and his associates. At least six congressional committees are investigating ethical and criminal violations, including review of financial records that were not covered in the Mueller investigation. The American people deserve to understand the depth and breadth of Trump’s ethical and criminal violations.

“Withholding foreign aid to Ukraine in an attempt to encourage interference in the next U.S. presidential election is a breach of the public trust. And blocking a U.S. intelligence complaint labeled ‘urgent concern’, filed with the independent inspector general and flagged to the Office of the Director of National Intelligence is against the law. Trump has violated his oath of office. He operates for himself, in his personal interest – and not in the interest of the American people. The impeachment inquiry should be put on the fast track and all of the facts made plain. My GOP colleagues are inexplicably silent in the face of the damage to the country emanating out of the White House.”