Sen. Ben Sasse (R-Neb.) said Sunday that he is not committed to the GOP’s ObamaCare repeal bill.

Sasse, who described the Senate bill as more of a "Medicaid reform package" than a repeal and replace of ObamaCare at a Koch summit this weekend, broke with the majority of his party in telling a group of donors to Charles and David Koch that he wasn’t committed to the bill, according to multiple reports.

Ben Sasse tells Koch crowd he's uncommitted on Senate HC bill, saying it is not a repeal or replace bill, but a "Medicaid reform package." — James Oliphant (@jamesoliphant) June 25, 2017

Ben Sasse asked about health care at Koch summit: “This session is on the record, right? There’s press here? I have nothing to announce” — Steve Peoples (@sppeoples) June 25, 2017

“I have nothing to announce,” he said.

Sasse noted that Senate Majority Whip John Cornyn John CornynHillicon Valley: Productivity, fatigue, cybersecurity emerge as top concerns amid pandemic | Facebook critics launch alternative oversight board | Google to temporarily bar election ads after polls close Lawmakers introduce legislation to boost cybersecurity of local governments, small businesses On The Trail: Making sense of this week's polling tsunami MORE (R-Texas) was in attendance, joking, “I have a bruise just inside my collarbone from his thumb on me," according to the Washington Examiner.

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Five GOP senators have now said that they won’t support the measure, and other Republican lawmakers said they need more time to review and amend the bill before bringing it up for a vote.

Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellDemocratic senator to party: 'A little message discipline wouldn't kill us' House to vote on resolution affirming peaceful transition of power Republican lawyers brush off Trump's election comments MORE (R-Ky.) unveiled the bill Thursday and is pushing for a vote on the measure this coming week.