Sen. Chuck GrassleyCharles (Chuck) Ernest GrassleyErnst endorses bipartisan Grassley-Wyden bill to lower drug prices Overnight Health Care: Nevada union won't endorse before caucuses after 'Medicare for All' scrap | McConnell tees up votes on two abortion bills | CDC confirms 15th US coronavirus case Mnuchin defends Treasury regulations on GOP tax law MORE (R-Iowa) announced Wednesday that he is canceling votes on nearly two dozen of President TrumpDonald John TrumpCensus Bureau spends millions on ad campaign to mitigate fears on excluded citizenship question Bloomberg campaign: Primary is two-way race with Sanders Democratic senator meets with Iranian foreign minister MORE’s judicial nominees that were expected to come up in the Judiciary Committee this week.

The cancellation of the committee’s Thursday business meeting comes as Senate Republicans are in a standoff with outgoing Sen. Jeff FlakeJeffrey (Jeff) Lane FlakeMcSally launches 2020 campaign Sinema will vote to convict Trump Senate drama surrounding Trump trial starts to fizzle MORE (R-Ariz.), who has vowed to oppose all court picks until he gets a vote on legislation protecting special counsel Robert MuellerRobert (Bob) Swan MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE

The notification from the Judiciary Committee didn’t specify when, or if, the committee votes on the nominations would be rescheduled. Six circuit court nominees had been expected to get a vote, as well as 15 district court nominees. 

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But Grassley warned late Wednesday afternoon that he would likely cancel the meeting unless he could get a deal with Flake that would allow the nominations to move forward.

“We haven’t canceled the meeting yet,” Grassley said roughly an hour before the announcement. “If we don’t get a positive out of it, we’ll probably cancel the meeting.”

Republicans hold a 51-49 majority in the Senate, allowing them to move Trump's nominees despite Flake as long as the remaining 50 Republican senators remain united.

But on the Judiciary Committee Republicans are limited to a 11-10 majority, meaning they need Flake's support unless they can get help from Democrats.

"We can vote on all the people who cleared the committee," said Sen. John CornynJohn CornynSenate braces for fight over impeachment whistleblower testimony Booker, Cornyn introduce bill to fund school nutrition programs Three Senate primaries to watch on Super Tuesday MORE (Texas), the No. 2 Republican senator and a member of the Judiciary Committee. "But in terms of getting a vote out of committee, we need his help."

Flake reiterated earlier Wednesday that he remains committed to opposing nominees until he gets a vote on the Mueller protection bill. He tried to get consent to schedule a vote on the bill Wednesday but was blocked by Sen. Mike LeeMichael (Mike) Shumway LeeThe Hill's Morning Report — AG Barr, GOP senators try to rein Trump in Overnight Defense: Senate votes to rein in Trump war powers on Iran | Pentagon shifting .8B to border wall | US, Taliban negotiate seven-day 'reduction in violence' The 8 Republicans who voted to curb Trump's Iran war powers MORE (R-Utah), who warned that the legislation was unconstitutional. 

The resolution, which cleared the Judiciary Committee earlier this year, would protect Mueller, or any other special counsel, in the event he is fired, but the bill has stalled amid opposition from GOP leadership.

The bill would codify Justice Department regulations that say only a senior department official could fire Mueller or another special counsel.

It would give a special counsel an "expedited review" of their firing. If a court determines that it wasn't for "good cause," the special counsel would be reinstated.