Immediately after Justice Antonin Scalia passed away Saturday night, the two parties began clashing over his replacement. Senate Majority Leader Mitch McConnell vowed to avoid an Obama nomination while Obama vowed to choose a nominee. It became a discussion point during that night’s Republican debate mere hours later, when Fla. Sen. Marco Rubio argued that a “lame-duck” president shouldn’t be allowed to appoint a Justice, and Texas Sen. Ted Cruz said he’d filibuster an Obama nomination.

Warren responded to those vowing to block Obama from nominating Scalia’s replacement with a post on her official Facebook page. McConnell argued that Obama shouldn’t appoint a Justice because the American people deserve to have a say. In response, Warren had this to say: “Sen. McConnell is right that the American people should have a voice in the selection of the next Supreme Court justice. In fact, they did — when President Obama won the 2012 election by five million votes.”

She invoked Article II Section 2 of the Constitution, which gives the president the power to appoint Supreme Court Justices with the advice and consent of the Senate. “I can’t find a clause that says ‘…except when there’s a year left in the term of a Democratic President,” Warren wrote mockingly.

She ended her post on this note:

Senate Republicans took an oath just like Senate Democrats did. Abandoning the duties they swore to uphold would threaten both the Constitution and our democracy itself. It would also prove that all the Republican talk about loving the Constitution is just that—empty talk.