Link , Link , [Trump has already threatened his critics in the Senate GOP with primary challengers, and conviction votes would only bring more attacks from the former president. On Monday, Sen. Rob Portman (R-Ohio) announced his retirement, allowing him to take in the trial without thinking about his reelection campaign next year. Sen. Pat Toomey (R-Pa.), who is also retiring next year, has conceded that Trump committed impeachable offenses. He declined to talk about the trial on Monday evening.]