"We are going to have a similar resolution. It may not be word for word exactly the same but a similar resolution, and we will be glad to show it to you when we unveil it," he said.

The 1999 Clinton rules resolution, which passed 100-0, included a spot in the trial after opening arguments and questions from senators where a vote on a motion to dismiss could be forced.

"After the conclusion of questioning by the Senate, it shall be in order to consider and debate a motion to dismiss as outlined by the impeachment rules," the resolution reads.

Trump backed an "outright dismissal" of the impeachment charges in a tweet over the weekend. But Republican senators say they will not dismiss the charges at the outset, but instead hold an impeachment trial.

"I think our members generally are not interested in a motion to dismiss. ... Certainly there aren't 51 votes for a motion to dismiss," Blunt said.