The House and Senate tax bills are more aligned than they are opposed, Sara Fagen said.
Johnson says President Trump personally promised to "'work my tail off'" to win the Wisconsin Republican's vote.
"In the current form, I wouldn't vote for it," the Wisconsin Republican says.
Sen. Collins is back in the spotlight as a swing vote in the Senate as she questions combining a Republican tax-cut plan with a partial repeal of Obamacare.
Trump has bad-mouthed Obamacare for years, but has been unable to win its repeal and replacement from Congress.
U.S. Senator Susan Collins said Democrats should be called again to testify about reports that their party and Hillary Clinton's presidential campaign paid for parts of a dossier that detailed accusations about President Donald Trump's ties to Russia.
A deal to stabilize Obamacare suffered major setbacks, with President Donald Trump now opposing it and senior Republicans speaking out against it.
Senate Republicans scrambled to ensure support for a budget resolution vital to President Donald Trump's drive to overhaul the U.S. tax code.
U.S. President Donald Trump will hurt low-income Americans by doing away with Obamacare subsidies and make it harder for him to engage in bipartisan talks with Democrats as Congress edges toward a possible government shutdown, lawmakers said on Sunday.
Sen. Susan Collins said she was leaning towards a 'yes' vote on the Senate budget resolution to advance tax reform.
U.S. Sen. Susan Collins said she's staying out of the governor's race because she believes she can do more good for Maine by staying in Washington.
Disagreement among U.S. congressional Republicans is already swirling around a tax cut plan unveiled days ago by President Donald Trump.
Republicans have powerful incentives to produce on tax reform, but they also face some big obstacles.
Trump urges Mitch McConnell — again — to get rid of the Senate filibuster rule.
Trump's claim came after Senate leaders decided not to vote on an Obamacare replacement bill because of opposition from three GOP senators.
Three GOP senators said they would vote "no" on the Graham-Cassidy bill, dooming it to defeat.
Three GOP senators have said they will vote "no" on Graham-Cassidy, the last opportunity for Republicans to pass Obamacare repeal this year.
Republican leaders have been unable for months to get 50 GOP senators to support a bill that would repeal and replace Obamacare.
The hearing comes five days before the deadline for passing an Obamacare replacement bill under special rules the GOP is using.
President Donald Trump reiterated comments he made on Twitter, blaming Senator John McCain for the failure to pass Obamacare repeal.