Senate leaders could not agree Thursday on an amendment process to a “minibus” spending bill that aims to fund parts of the government after September.

Senate Majority Leader Harry ReidHarry Mason ReidTrump presses GOP to change Senate rules Only thing Defense’s UFO probe proves is power of political favors Nevada Democrat accused of sexual harassment reconsiders retirement: report MORE (D-Nev.) tried to get unanimous consent to hold votes on germane amendments to the three appropriations bills as long as passage was held to a 60-vote threshold. 

“Senators on both sides have said they want to have amendments and we should have amendment votes,” Reid said. “We’re going to have the ability to offer germane amendments and we will follow the ‘McConnell rule’ and hold amendments to 60 votes.”

Senate Minority Leader Mitch McConnellAddison (Mitch) Mitchell McConnellCollins: 'Extremely disappointing' ObamaCare fix left out of spending deal House poised to vote on .3T spending bill Budowsky: Stop Trump from firing Mueller MORE (R-Ky.) objected, saying only controversial amendments should be held to a 60-vote threshold.

“We’re being shut out of amendments,” McConnell said. “When will we start legislating again?”

The Senate is now officially considering H.R. 4660, a $120 billion “minibus” spending bill that funds the departments of Agriculture, Commerce, Justice, Transportation and Housing and Urban Development. But it seems unlikely that progress will be made on the legislation until an amendment process agreement is reached. 

Earlier this week, the Senate voted 95-3 to end debate on the motion to proceed, but Republicans have complained that Reid has allowed only nine votes on Republican amendments since last July.

"I’ve never seen the majority stifling amendments like they are right now," Sen. Orrin HatchOrrin Grant HatchOmnibus includes search-and-seize provision New kid on the tech block Senate GOP: Legislation to protect Mueller not needed MORE (R-Utah) said. "It’s pathetic and it’s got to change."

Senate Appropriations Committee Chairwoman Barbara MikulskiBarbara Ann MikulskiDems ponder gender politics of 2020 nominee Robert Mueller's forgotten surveillance crime spree Clinton: White House slow-walking Russia sanctions MORE (D-Md.) and ranking member Sen. Richard Shelby (R-Ala.) will likely spend the weekend trying to figure out a way to proceed.