The following is a list of efforts to repeal the Patient Protection and Affordable Care Act (commonly called the "Affordable Care Act (ACA)" or "Obamacare"), which had been enacted by the 111th United States Congress on March 23, 2010.
A January 9, 2017 Congressional Research Service report entitled "Legislative Actions to Repeal, Defund, or Delay the Affordable Care Act," noted that since ACA was passed in 2010, Congress has been deeply divided over the ACA. "Lawmakers opposed to specific provisions in the ACA or the entire law have repeatedly debated its implementation and considered bills to repeal, defund, delay, or otherwise amend the law." In October 2013, there was a "partial shutdown of government operations" that lasted over two weeks because of a disagreement between the "Democratic-controlled Senate and the Republican-led House" over the "inclusion of ACA language" in the FY2014 temporary spending bill.
In 2011, after Republicans gained control of the House of Representatives, one of the first votes held was on a bill titled "Repealing the Job-Killing Health Care Law Act" (H.R. 2), which the House passed 245–189. All Republicans and 3 Democrats voted for repeal. House Democrats proposed an amendment that repeal not take effect until a majority of the Senators and Representatives had opted out of the Federal Employees Health Benefits Program; Republicans voted down the measure. In the Senate, the bill was offered as an amendment to an unrelated bill, but was voted down. President Obama had stated that he would have vetoed the bill even if it had passed both chambers of Congress.
Following the 2012 Supreme Court ruling upholding ACA as constitutional, Republicans held another vote to repeal the law on July 11; the House of Representatives voted with all 244 Republicans and 5 Democrats in favor of repeal, which marked the 33rd, partial or whole, repeal attempt.
In January 2013, Republicans introduced An act to repeal the Patient Protection and Affordable Care Act in the United States House of Representatives.