That isn't what he was impeached for. He lied under oath to a federal judge. If he had told the truth, he would have been embarrassed but not impeached - instead, he lied and got both.
IF YOU BELIEVE THAT MR. CLINTON’S TRYST WITH A YOUNG INTERN WAS AN IMPEACHABLE OFFENSE, BUT TRUMP’S ATTEMPTS TO COERCE A FOREIGN GOVERNMENT TO HELP HIM WIN RE-ELECTION IS NOT; YOU JUST MIGHT BE A PARTISAN.