During a news conference earlier in the week, the advocacy group and other organizations that are critical of the Republican health proposals urged people to call Cassidy's office and tell him to oppose the legislation.
The Senate bill, which could be voted on next week, doesn't let states allow insurers to charge more to people with pre-existing conditions, as the House bill does.
"It's so easy. But we won't get one Democrat vote, not one".
Nonetheless, Heller's announcement underscores the scant margin of error Republican leaders must deal with.
Trump held a victory celebration in the Rose Garden of the White House after the House vote, but since then has called the legislation "mean". The proposal would impose long-term federal spending cuts on the program.
ROVNER: Well, of course, there's only 52 Republicans in the Senate. "And it's certainly better for the state and the federal taxpayer".
"I can not support a piece of legislation that takes away insurance from tens of millions of Americans and hundreds of thousands of Nevadans", Heller said in a news conference held in his home state.
"I just don't know whether the votes will be there by the end of the week", said Moran, R-Kan., during an interview on "Sunday Morning Futures" with Maria Bartiromo.
But the Senate measure would bring additional Medicaid cuts to states including Wisconsin, which is penalized in both bills for not fully expanding Medicaid under Obama's law, he said.
"No argument against Trumpcare is more eloquent than the grave consequences it means in people's lives", she wrote colleagues.
"It's hard for me to see the bill passing this week", Collins said.
Heller got an opponent for next year when first-year Democratic Rep. Jacky Rosen announced this week she would seek his Senate seat.
"It's not that they're opposed", he said. Ted Cruz of Texas, Ron Johnson of Wisconsin and Mike Lee of Utah in saying they can not support the bill as presented but are open to changes to more fully repeal former President Barack Obama's ACA.
Underscoring the sensitivity of the bill, Sen.
"It was just released yesterday. And that's the way we're going to reform health care in the 21st Century". "But I think they're going to get there", Trump said of Republican Senate leaders. Iowa opted to expand, and has added more than 150,000 people to its rolls since 2014. "And small tweaks over the course of the next couple weeks, under the guise of making these bills easier to stomach, can not change the fundamental meanness at the core of this legislation". The Senate parliamentarian will make that decision. Johnson tweeted Saturday that his remarks about the health care bill are "not a bluff".
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