Former House Speaker John Boehner of OH calls on a reporter during a news conference on Capitol Hill in Washington, Friday, Nov. 9, 2012.
If he keeps dividing the party and putting them on constant defense, he warned "they're going to get annihilated" in the midterm elections.
The Republicans' best shot, Boehner said, was to gradually reduce aspects of the legislation over the next few months, focusing on tax provisions, regulations and the end of health insurance mandates. He also expected governors will get more control over Medicaid in their states.
The Senate on Tuesday will vote on a procedural measure to continue their push to repeal and replace Obamacare following several failed attempts in recent weeks.
Trump attacked Brzezinski as "low I.Q. Crazy Mika" in a series of morning tweets, claiming that he had seen Brzezinski "bleeding badly from a face-lift".
Boehner, who supported Trump's candidacy, also had some choices about the President's performance.
One is you never get into a fight with people who buy ink by the barrel.
He added, "It may have worked during the campaign. But I think he would do himself well if he would just slow the tweeting down and just focus on what he's doing and not being critical", Boehner said.
Boehner went on to tell the group that cutting bipartisan deals in Washington is now all but impossible due to the way negotiations unfold in the media. "Well, that's gone. Everything today is instant".
He noted that the now-president used to call him and encourage him if the former speaker had a bad day at the office.
In remarks at a private Las Vegas business gathering, Boehner said the GOP's flailing attempts to reform health care were "not going to work" because Americans have become too accustomed to former President Barack Obama's signature law.
"These radio talk show guys, they carry on, it's just nonsense", Boehner said. The last time he made headlines, his successor, House Speaker Paul D. Ryan, R-Wis., sent him a dismayed text.