U.S. President Barack Obama will press Senate Republican leaders on Tuesday to fill the vacancy on the Supreme Court created by the death of Justice Antonin Scalia, despite Republican vows to not to act on anyone he nominates.

Obama is slated to speak at 11:30 a.m. EST (1630 GMT) with Senate Majority Leader Mitch McConnell and the Republican head of the Senate Judiciary Committee Chuck Grassley at the White House.

The president and Republican senators are at odds over whether Obama should select a replacement for Scalia in an election year.

Any pick by Obama must confirmed by the Republican-controlled Senate. McConnell and Grassley have argued that the seat should remain vacant until Obama’s successor takes office next January, allowing the American people to have a say in the selection when they choose a new president in the Nov. 8 election.

At Tuesday interacting with Obama to press Republicans to load Supreme Court vacancyWhite House spokesman Josh Earnest said on Monday that Obama was committed to having a serious discussion with the lawmakers about his “constitutional responsibility” to appoint a successor to Scalia and how he would like to see the process play out.

“We’ll have to see if Republicans are also committed to that kind of serious conversation,” Earnest told reporters at a briefing. “Maybe they won’t be, and if they aren’t, then maybe it will be a shorter-than-expected meeting.”

Scalia’s death fourteen days ago offers rocked the U.S. political picture. Without Scalia, the courtroom possesses four conservative and four liberal justices today, and therefore any potential Obama nominee could hint the total amount of the court left for the very first time in decades.

The Republican lawmakers stated the other day that they intend to reinforce their situation at the White Home meeting to hold back until following the election to complete the vacancy.

“We look forward to reiterating to him directly that the American people will be heard and the next Supreme Court justice will be determined once the elections are complete and the next president has been sworn into office,” the pair said in a statement.

Senate Democratic Leader Harry Reid and the top Democrat on the Judiciary committee, Patrick Leahy, will also attend the White House meeting.