Sen. Orrin Hatch Orrin Grant HatchBottom line Bottom line Senate GOP divided over whether they'd fill Supreme Court vacancy MORE (R-Utah) on Monday expressed doubt about the passage of the GOP’s latest plan to replace ObamaCare, saying the chances of pushing the Graham-Cassidy bill through the upper chamber are slim.

“It's nearly impossible. I’m not saying anything is impossible because we could always maybe work it out in the end but so far I haven’t seen” anything indicating this time will be different, Hatch told reporters, according to Bloomberg News.

Hatch's remarks came the same day as a planned hearing on the new health-care measure put forth by Sens. Lindsey Graham Lindsey Olin GrahamGraham: GOP will confirm Trump's Supreme Court nominee before the election Fox's Napolitano: Supreme Court confirmation hearings will be 'World War III of political battles' Grassley, Ernst pledge to 'evaluate' Trump's Supreme Court nominee MORE (R-S.C.) and Bill Cassidy William (Bill) Morgan CassidyCoushatta tribe begins long road to recovery after Hurricane Laura Senators offer disaster tax relief bill Bottom line MORE (R-La.). The bill aims to repeal much of ObamaCare and provide block grants to states to use for health-care funding.

In his opening statement at the hearing, Hatch addressed the challenges posed by the legislation, as well as the differing viewpoints surrounding the issue of health care. "But, while I wish that expressions of goodwill could, on their own, fix our nation's problems, that is just not the case. We have to do the work. And, on these issues, the work is particularly hard," he said.

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The bill's success hinges on a select few since the party can only afford to lose two Republican votes in order to get the necessary 50 votes necessary to pass it. Sens. 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 (R-Ariz.) and 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.) have already stated their opposition to the plan, while Sen. Susan Collins Susan Margaret CollinsGraham: GOP will confirm Trump's Supreme Court nominee before the election Gardner signals support for taking up Supreme Court nominee this year Tumultuous court battle upends fight for Senate MORE (R-Maine) appears to largely be against the measure.

McCain also opposed a previous slimmed-down ObamaCare repeal bill in July, famously giving a thumbs-down vote that proved decisive in killing its chances.

Republicans are making one last push to pass health-care legislation by Sept. 30, after which a special rule that allows them to move a bill without Democrats will expire. After that, Democrats will be able to filibuster their health-care pushes.

Protesters have packed the hallways outside the Senate hearing and repeatedly interrupted the proceeding with some yelling chants like, "Kill the bill, don't kill me."

President Trump on Monday also appeared pessimistic about the passage of the bill, while blaming McCain for shooting down their chances at enacting a new health-care system.