Sen. Chuck GrassleyCharles (Chuck) Ernest GrassleyGrassley raises concerns about objectivity of report critical of GOP tax law's effects Overnight Health Care: Key Trump drug pricing proposal takes step forward | Missouri Planned Parenthood clinic loses bid for license | 2020 Democrats to take part in Saturday forum on abortion rights Key Trump proposal to lower drug prices takes step forward MORE (R-Iowa) announced Wednesday that he is canceling votes on nearly two dozen of President TrumpDonald John TrumpNew EPA rule would expand Trump officials' powers to reject FOIA requests Democratic senator introduces bill to ban gun silencers Democrats: Ex-Commerce aide said Ross asked him to examine adding census citizenship question 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 FlakeJeff Flake becoming Harvard fellow Democrats needle GOP on standing up to Trump Amash gets standing ovation at first town hall after calling for Trump's impeachment 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 MuellerKamala Harris says her Justice Dept would have 'no choice' but to prosecute Trump for obstruction Dem committees win new powers to investigate Trump Schiff says Intel panel will hold 'series' of hearings on Mueller report 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 CornynDemocrats give Trump trade chief high marks GOP senators divided over approach to election security GOP lawmakers want Mulvaney sidelined in budget talks 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 LeeOvernight Defense: Officials brief Congress after Iran shoots down drone | Lawmakers fear 'grave situation' | Trump warns Iran | Senate votes to block Saudi arms sales | Bombshell confession at Navy SEAL's murder trial The 7 GOP senators who voted to block all or part of Trump's Saudi arms sale Senate votes to block Trump's Saudi arms sale 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.