Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellDemocratic senator to party: 'A little message discipline wouldn't kill us' House to vote on resolution affirming peaceful transition of power Republican lawyers brush off Trump's election comments MORE (R-Ky.) on Monday said that the Senate would have "no choice" but to take up impeachment if the House passes articles against President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE.

"Well under the Senate rules we're required to take it up if the House does go down that path and we'll follow the Senate rules," McConnell said during an interview with CNBC.

ADVERTISEMENT

Pressed on if he was saying the Senate would take action on impeachment, he added: "I would have no choice but to take it up, based on a Senate rule on impeachment."

McConnell's comments come after House Democrats announced last week that they were formally moving forward with an impeachment inquiry.

The GOP leader was asked last week, before House Speaker Nancy Pelosi Nancy PelosiDemocratic senator to party: 'A little message discipline wouldn't kill us' Overnight Health Care: New wave of COVID-19 cases builds in US | Florida to lift all coronavirus restrictions on restaurants, bars | Trump stirs questions with 0 drug coupon plan Overnight Defense: Appeals court revives House lawsuit against military funding for border wall | Dems push for limits on transferring military gear to police | Lawmakers ask for IG probe into Pentagon's use of COVID-19 funds MORE's (D-Calif.) announcement, about what he would do if the House sent over impeachment articles. But McConnell declined at the time to weigh in, saying he wasn't going to comment on hypotheticals.

"I'm not going to address all of these various hypotheticals that have been aired out about what may or may not happen in the House, and I think all of that's quite premature," he told reporters.

A GOP Senate leadership aide clarified in a memo to reporters over the weekend that if the House passes articles of impeachment against Trump, the Senate must take some action.

"There is no way we could somehow bar the doors and prevent the managers from presenting the articles (to the Senate). The rules of impeachment are clear on this point," the aide said.

What an eventual trial would look like is up for debate, and negotiation.

McConnell, in his CNBC interview, noted that he's being guided by a "Senate rule related to impeachment that would take 67 votes to change. So I would have no choice but to take it up. How long you're on it is a whole different matter."

Republican senators have vowed they would quickly squash any impeachment attempts in the Senate, where 67 votes, or a two-thirds majority, to convict the president.

The GOP aide noted that trying to dismiss the articles of impeachment would be allowed under the Senate's impeachment rules.

In 1986 then-Senate Parliamentarian Robert Dove outlined guidelines for the Senate's actions to Howard Greene Jr., who was then Secretary of the Senate, according to a memo shared by the GOP Senate leadership aide.

"Under the Senate Rules the House of Representatives must immediately be informed that the Senate is ready to receive the managers 'whensoever the Senate shall receive notice' of an impeachment. Furthermore, under those same rules, the impeachment trial must commence at 1:00 o'clock on each day, Sundays excepted, and shall continue in session from day to day until final judgment shall be rendered," according to the memo.