The Hill reports:
GOP senators say that if the House passes articles of impeachment against President Trump they will quickly quash them in the Senate, where Majority Leader Mitch McConnell (R-Ky.) has broad authority to set the parameters of a trial.
While McConnell is required to act on articles of impeachment, which require 67 votes — or a two-thirds majority — to convict the president, he and his Republican colleagues have the power to set the rules and ensure the briefest of trials.
“I think it would be disposed of very quickly,” said Senate Judiciary Committee Chairman Lindsey Graham (R-S.C.). “If it’s based on the Mueller report, or anything like that, it would be quickly disposed of,” he added.
Hit the link for more on the mechanics of an impeachment trial in the Senate.