Rep. Brad Sherman (D., Calif.) said on MSNBC Tuesday that he has "clear and convincing proof" that President Donald Trump committed obstruction of justice.
Sherman and Rep. Al Green (D., Texas) introduced articles of impeachment against Trump on Tuesday. Sherman was interviewed by MSNBC host Katy Tur about his and Green's plan to impeach the president.
Tur asked Sherman if he believed that he had "an ironclad case" against Trump.
"I do," Sherman said.
"We've got clear and convincing proof, sworn testimony of obstruction of justice defined by section 1512(B)(3) of the criminal code of the United States in two instances," he said.
Sherman's two instances were the president's meeting with former FBI director James Comey in February, of which Comey claimed the president tried to get him to drop the FBI investigation into fired National Security Adviser Michael Flynn; and the president's subsequent firing of Comey in May.
"The president fired James Comey and indicated that the reason he did it was to curtail an investigation into Russian collusion," Sherman said.
Sherman said he viewed his charges as just the start of a long but necessary process.
"It's true we may find other high crimes and misdemeanors. And when you say go to court and prosecution—this is a long process, and the next step is for the judiciary committee to hold hearings, and they're not going hold them unless we have substantial national pressure on them to do just that," he said.