The Republican leadership issued a memo Saturday clarifying that the Senate must take action if the House of Representatives approves articles of impeachment against President Donald Trump. The statement came in response to concerns that the Senate could simply refuse to hold a trial.

“There is no way we could somehow bar the doors and prevent the managers from presenting the articles to the Senate,” stated the memo, which was obtained by HuffPost. “The rules of impeachment are clear on this point.”

Senate Majority Leader Mitch McConnell (R-Ky.) also said as much in a March interview with NPR: “If it [impeachment] were to happen, the Senate has no choice. If the House were to act, the Senate immediately goes into a trial.”