Now, with Republicans in control of the House, Senate and presidency, they are working to create a plan that would be cheaper and provide better health insurance than the ACA did.
Under the plan revealed last week by House Speaker Paul Ryan, the most vulnerable Americans would feel the carnage the most.
Arthur Tacchino, a healthcare reform expert for SyncStream Solutions, told The Independent that what those next phases are still unclear but may involve Mr Trump signing executive orders and passing additional health care-related laws.
Senator Bernie Sanders, who ran for president in 2016 as a Democrat, said it was "cowardly" for Republicans to proceed with a healthcare bill without CBO estimates, telling CBS' Face the Nation show: "This is a disgrace".
" 'It's our job to get it out of here and get it to the Senate, ' " Pence told the Republicans, according to Rep. Dennis Ross, R-Fla.
Even though list price premiums for a standard "silver" plan went up by more than 20 percent this year, the average premium paid by HealthCare.gov customers after receiving their tax credit only went up by $1 this year, the report said.
Trump was expected to urge lawmakers to back the bill in remarks later Wednesday in Nashville, Tenn.
"I want everyone to know I'm 100 percent behind this", Trump said at the White House". "As drafted, the House bill would not pass the Senate". Other Republican governors have raised concerns about the health care effort, particularly on Medicaid. Yet it's heading for a collision with the internal politics of Republicans in the House and Senate, where conservatives have been pushing to wind down the Medicaid expansion as soon as next year.
Less well understood, though, is the impact the law would have on some of the country's most vulnerable individuals: Medicaid recipients with mental illness, addiction problems, and even dementia.
"They're buying off people one by one with these little changes", said Rep. Raul Labrador.
Cutting Medicaid by $880 billion over those years threatens the safety net of millions of children, seniors, and people with disabilities, he said.
In a new complication, Sen. That left House moderates angry over being asked to take a politically risky vote for legislation that seems likely to be significantly altered.
"We're not going to have one-size-fits-all", Trump said.
"As of today, they do not have the votes based on the public comments by Senators". This was called the "individual mandate". She joins Kentucky's Rand Paul and Utah's Mike Lee in opposing the legislation, while other Republicans, including Tom Cotton of Arkansas and Ted Cruz of Texas, have expressed deep misgivings.
An analysis by the nonpartisan Congressional Budget Office found 24 million people would lose their health insurance over a decade though the bill would also reduce the deficit.
But Trump on Friday said that the current state of Obamacare necessitates that bill passing Congress. The rally was organized by FreedomWorks, a conservative group backed by the billionaire Koch brothers.
President Donald Trump endorsed the plan despite the projected millions who would lose the ability to purchase affordable health care insurance, breaking a campaign promises. Moreover, they represent initial enrollment, and there's usually significant attrition over the course of a year.