The health insurance industry, which has been cautious about previous bills to repeal the Affordable Care Act, came out sharply against the latest version.
Senator Lamar Alexander gave up on his effort to shore up health care markets as his fellow Republicans pressured lawmakers to back the latest Affordable Care Act repeal.
The bill to repeal the Affordable Care Act bears the name of Mr. Graham, but Mr. McCain, who helped sink an earlier repeal attempt, has remained undecided.
A long-shot effort by Senators Lindsey Graham and Bill Cassidy to repeal the Affordable Care Act got new life on Monday, with a showdown vote possible soon.