Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellFEC flags McConnell campaign over suspected accounting errors Poll: 59 percent think president elected in November should name next Supreme Court justice Mark Kelly: Arizona Senate race winner should be sworn in 'promptly' MORE’s (R-Ky.) spokesman says the Senate does not have enough votes to change its rules and pass border wall funding with a simple majority.

“The Leader has said for years that the votes are not there in the Conference to use the nuclear option. Just this morning, several Senators put out statements confirming their opposition, and confirming that there is not a majority in the conference to go down that road,” said David Popp, McConnell’s communications director.

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Popp issued his statement after several Republican senators voiced opposition to holding a procedural vote known as the “nuclear option” to change the Senate’s rules and make it easier to pass a funding bill that includes $5.7 billion to build a border wall.

Trump urged McConnell Friday morning to pull out all the stops to fund the wall.

“Mitch, use the Nuclear Option and get it done! Our Country is counting on you!” he tweeted.

The House passed on Thursday a short-term government funding bill that provides $5.7 billion to construct a border wall but Democrats say they will defeat it in the Senate.

While Republicans have a 51-49 majority in the upper chamber, Democrats can block the House bill with a filibuster or other procedural objections, which require 60 votes to overcome.

Sen. Steve Daines Steven (Steve) David DainesTrump seeks to turn around campaign with Supreme Court fight McConnell locks down key GOP votes in Supreme Court fight Will Republicans' rank hypocrisy hinder their rush to replace Ginsburg? MORE (R-Mont.), who is up for reelection in 2020 in a state that Trump won by 20 points, has urged colleagues to invoke the nuclear option to lower the vote threshold vote stopping a filibuster.

Trump praised Daines for the bold position.

“Thank you @SteveDainesfor being willing to go with the so-called nuclear option in order to win on DESPERATELY NEEDED Border Security! Have my total support,” Trump tweeted.

Republican Sens. Jeff Flake Jeffrey (Jeff) Lane FlakeHow fast population growth made Arizona a swing state Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Republican former Michigan governor says he's voting for Biden MORE (Ariz.) and Lamar Alexander Andrew (Lamar) Lamar AlexanderGraham: GOP has votes to confirm Trump's Supreme Court nominee before the election The Hill's Morning Report - Sponsored by Facebook - Washington on edge amid SCOTUS vacancy This week: Supreme Court fight over Ginsburg's seat upends Congress's agenda MORE (Tenn.) immediately announced Friday morning that they would not vote for the nuclear option.

The retiring Senate president pro tempore, Sen. Orrin Hatch Orrin Grant HatchBottom line Bottom line Senate GOP divided over whether they'd fill Supreme Court vacancy MORE (R-Utah), also said he opposed the idea.

He said the Senate’s traditional 60-vote threshold for quashing a filibuster “has prevented our country for decades from sliding toward liberalism.”