Former Special Counsel Jack Smith testified publicly for the first time on Capitol Hill about his investigation of President Donald Trump’s efforts to overturn the 2020 election.

He said the case had “proof beyond a reasonable doubt that President Trump engaged in criminal activity,” and remained confident had it gone to trial.

Smith told the committee that he believed he could have obtained a conviction in what was seen by many as the most serious of the charges: Conspiring to deny Americans a free and fair election by pushing to overturn the 2020 election.

“Our investigation developed proof beyond a reasonable doubt that President Trump engaged in a criminal scheme to overturn the results of the 2020 election and to prevent the lawful transfer of power,” said Smith.