Conservative senators on Thursday threatened to hold up any Senate legislation that doesn’t specifically deal with reducing the nation’s debt. 

In a letter to Senate Majority Leader Harry ReidHarry Mason ReidLobbying World Mitch McConnell is not invincible Seven big decisions facing Biden in 2020 primary MORE (D-Nev.), the senators complained that only three hours of debate were scheduled Wednesday before votes on dueling proposals to reduce spending.

“This debate gave only a limited (three hours) opportunity to debate what many Americans believe is the issue of our time — cutting government spending and dramatically reducing our national debt,” said the letter to Reid.

A spokesman for Senate Minority Leader Mitch McConnellAddison (Mitch) Mitchell McConnellThe Hill's Morning Report - Pelosi remains firm despite new impeachment push Iraq War looms over Trump battle with Iran 2020 Dems break political taboos by endorsing litmus tests MORE (R-Ky.) said more time needs to be given in the Senate for debating the nation's debt woes. 

“Senator McConnell appreciates their focus on the most important issue facing our country right now – the out of control spending and rising national debt – and agrees that there should be sufficient floor time to debate this issue in advance of reaching our statutorily-mandated debt limit,” McConnell spokesman Robert Steurer said.

Hours were consumed on the Senate floor on Monday on debate over the Patent Reform Act, which ended up passing the Senate. Reid plans to move to a small business bill next.

The lawmakers also criticized Reid for not allowing them to offer amendments to the measures.

“This statement is clear,” said Sen. David VitterDavid Bruce VitterSenate confirms Trump judge who faced scrutiny over abortion views Collins votes against Trump judicial pick Progressive group targets Susan Collins over Trump judicial pick MORE (R-La.) in announcing the letter on the Senate floor. “This is a crisis. We need to act before we reach the debt limit. Let’s act now. Lets not move to other cat and dog bills that may be positive legislation but can certainly wait.”

The letter was also signed by Sens. Jeff SessionsJefferson (Jeff) Beauregard SessionsHouse Democrats leave empty chair for McGahn at hearing MSNBC host: Barr 'the most dangerous person' who works for Trump Chris Wallace: AG Barr 'clearly is protecting' Trump MORE (R-Ala.), Marco RubioMarco Antonio RubioAnother VPOTUS tries for POTUS: What does history tell us? Tensions swirl around Iran as administration to brief Congress Tensions swirl around Iran as administration to brief Congress MORE (R-Fla.), Jim DeMint (R-S.C.), Rand PaulRandal (Rand) Howard PaulGOP presses Trump to make a deal on spending House Freedom Caucus votes to condemn Amash's impeachment comments Bolton emerges as flashpoint in GOP debate on Iran MORE (R-Ky.), Pat Toomey (R-Pa.), Mike LeeMichael (Mike) Shumway LeeHillicon Valley: Google delays cutting off Huawei | GOP senators split over breaking up big tech | Report finds DNC lagging behind RNC on cybersecurity GOP senators split over antitrust remedies for big tech Fix the climate with smaller families MORE (R-Utah) and John Ensign (R-Nev.)

If Reid dedicates significant time to debating the budget crisis prior to when the government is expected to reach its debt ceiling, the senators said they would drop their objections. 

“Our objections would be withheld if the Senate agrees to dedicate significant floor time to debate this issue well in advance of the federal government reaching our statutorily mandated debt limit,” said the letter.

The Senate began a roll call vote on the the nomination of Max O. Cogburn, Jr. to be United States District Judge for the Western District of North Carolina at about 3 p.m. That is the last vote scheduled for Thursday in the Senate.

This story was updated at 6:27 p.m.