Sen. Lindsey Graham has a message for Nancy Pelosi: Put your money where your mouth is.

The South Carolina Republican challenged the House speaker to hold a formal vote opening an impeachment inquiry into President Trump, claiming the speaker was seeking to duck a difficult vote for her moderate members.

“Moderate Democrats are hiding behind her. So if you really believe that this is an impeachable offense or other things are impeachable subject to an inquiry, vote on it,” Graham said, according to CNN. “If you think the president has soiled the office, do something about it. If you think this is an impeachable offense, vote. Go on the record.”

He continued: “The one thing that makes me crazy is to talk in the abstract. Have the courage of your convictions, read the phone call for yourself. Do you think this was out of bounds? That this was a quid pro quo? Whatever you think, go public with it. Let’s vote.”

Graham then issued a warning to his “Democratic friends.”

“You’re going down a dangerous road here for the future of the presidency, as well as your own future, but that’s up to y’all.”

On Tuesday, Pelosi announced that Democratic leaders were launching an official impeachment inquiry into Trump after the president publicly acknowledged he asked Ukraine President Volodymyr Zelensky in July to investigate Hunter Biden, the son of former Vice President Joe Biden.

The White House released a summary of the 30-minute call Wednesday that showed Trump repeatedly asked Zelensky about probing the Bidens.