Few members of Congress have been as aggressive in trying to hold former President Donald J. Trump accountable for the Capitol riot as Representative Jamie Raskin, Democrat of Maryland.
Mr. Raskin, 59, was the lead impeachment manager in Mr. Trump’s second impeachment trial, during which seven Republican senators joined every Democrat in voting to convict the former president of incitement of insurrection for his role in the mob attack on the Capitol.
Though that vote fell short of the 67 senators needed to convict, Mr. Raskin has frequently noted that “commanding majorities” in both the House and the Senate believed Mr. Trump was guilty.
Now, as the House committee investigating the Capitol attack begins a series of high-profile hearings, Mr. Raskin has another chance to make a public case against Mr. Trump. With evidence gathered from more than 1,000 witnesses, Mr. Raskin has said that the committee’s findings will “blow the roof off the House.”
“We are in the thick of a struggle to defend our democratic institutions and our democratic processes and the constitutional order,” he said. “We have a former president who now has positioned himself and his supporters outside of the constitutional order. They attack our elections. They attack the peaceful transfer of power. They attack the rule of law.”
A former constitutional law professor at American University and a state senator from Maryland, Mr. Raskin is known on Capitol Hill for his detailed discussions of U.S. history and the nuances of the Constitution. He is the chief sponsor of legislation to create a commission that could remove a president from office under the 25th Amendment.
Mr. Raskin, a Harvard Law graduate, has also released a memoir, “Unthinkable: Trauma, Truth, and the Trials of American Democracy,” about 45 days that forever changed his life around the time of the Capitol siege.
Days before the riot, his son, Tommy, 25 and a student at Harvard Law, died from suicide on New Year’s Eve. Debilitated by grief, Mr. Raskin then lived through the mob attack on the Capitol. He almost immediately began pressing to impeach Mr. Trump a second time for inciting the assault, and within days, Speaker Nancy Pelosi appointed him to lead the effort.
In that moment, as Mr. Raskin was deep in grief, the assignment to prosecute Mr. Trump for the riot gave him a sense of purpose and a reason to go on.
“She pulled me up from the depths of despair and loss,” he said of Ms. Pelosi.