In the United States, no one is above the law. Congress must begin impeachment proceedings against Donald Trump immediately for his abuse of power and violation of public trust.

Donald Trump and those around him have sought to undermine the institutions of our democracy in ways we've never seen before.

Our nation's founders made sure that the Constitution contained a check on a president who abused power and broke the law.

The Mueller Report and Robert Mueller's testimony confirmed that Trump has not been exonerated and that there are open matters of obstruction of justice that only Congress can pursue.

Trump also withheld funds appropriated by Congress from Ukraine to pressure Ukraine's president to aid in Trump's re-election—and suppressed the whistleblower complaint about these crimes. A partial summary of a phone call was released by the White House this morning confirming Trump's attempt to seek foreign assistance in his political campaign by smearing a political rival. He even encouraged the Ukrainian president to work with both the government's attorney general and Trump's personal attorney.

We will not treat this as normal. And politicians in Washington must not continue to conduct business as usual. Everyone in Congress must look in the mirror and decide how they will fulfill their oath to defend our Constitution—and which side of history they want to be on.

If they fail to do so, millions of MoveOn members across the country will hold them accountable.