The impending impeachment trial of President Donald Trump has boosted the profile of senators who have specific experience in their background: spending time in front of a judge.

Virginia Democrat Tim Kaine, who tried cases and pressed appeals as a civil rights lawyer before he entered politics, said Wednesday that Minority Leader Charles E. Schumer of New York has started a dialogue with him and other Democratic senators who have courtroom experience ahead of the impeachment trial.

Senators will have to sit in silence as they play a role somewhere between juror and judge, meaning they won’t be presenting the two articles of impeachment or leading Trump’s defense.

But senators from both parties can submit questions for House impeachment managers or Trump’s defense team that will be read aloud by presiding officer Chief Justice John G. Roberts Jr. There were two days dedicated to those questions during President Bill Clinton’s impeachment trial in 1999.

“I think those of us who have tried cases sort of know how to ask them in the way that is the pithiest and that’s the shortest,” Kaine said. “You want that question to be phrased in the absolute perfect way when Chief Justice Roberts reads it.”