Sen. Rand Paul Randal (Rand) Howard PaulSecond GOP senator to quarantine after exposure to coronavirus GOP senator to quarantine after coronavirus exposure The Hill's Morning Report - Sponsored by National Industries for the Blind - Trump seeks to flip 'Rage' narrative; Dems block COVID-19 bill MORE (R-Ky.) blocked Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellGraham: GOP will confirm Trump's Supreme Court nominee before the election Trump puts Supreme Court fight at center of Ohio rally The Memo: Dems face balancing act on SCOTUS fight MORE's (R-Ky.) request early Friday morning for the chamber to advance the annual defense funding bill.

McConnell made the request in the immediate aftermath of the Senate's shocking rejection of a scaled-back bill to repeal parts of ObamaCare, asking for unanimous consent to proceed to the defense legislation.

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Senate Minority Leader Charles Schumer Chuck SchumerJacobin editor: Primarying Schumer would force him to fight Trump's SCOTUS nominee CNN's Toobin: Democrats are 'wimps' who won't 'have the guts' to add Supreme Court seats Republican senator says plans to confirm justice before election 'completely consistent with the precedent' MORE (D-N.Y.), who rejected Sen. John McCain John Sidney McCainBiden's six best bets in 2016 Trump states Replacing Justice Ginsburg could depend on Arizona's next senator The Hill's Morning Report - Sponsored by Facebook - Washington on edge amid SCOTUS vacancy MORE's (R-Ariz.) request on Thursday to pause the healthcare debate and move on to the National Defense Authorization Act (NDAA), said after the healthcare vote that he would let the bill move forward.

But Paul, who has been among the Senate's most vocal ObamaCare critics, voiced an objection to McConnell's request without explaining why, stalling proceedings on the NDAA, which is typically one of the least controversial spending bills.

Instead, the Senate will take up judicial nominations when lawmakers meet on Monday.

"Senator Rand Paul requested two bipartisan amendments, one on ending indefinite detention and one on AUMFs," said Paul communications director Sergio Gor, referring to authorizations for the use of military force.

"He looks forward to working with leadership and the committee to get this done soon."

— This story was updated at 11:01 a.m.