In July 2018, O'Rourke said that Trump's performance while attending the 2018 Russia–United States summit in Helsinki warranted impeachment. Addressing the Trump–Putin joint press conference of July 16, he said standing "on stage in another country with the leader of another country who wants to and has sought to undermine this country, and to side with him over the United States—if I were asked to vote on this I would vote to impeach the president." On March 23, 2019, O'Rourke accused President Trump of collusion with Russia to "undermine and influence" U.S. elections.