H.R. 3950, also known as the Patient Protection & Affordable Care Act (PPACA), or simply the Affordable Care Act, was signed into law on March 23, 2010 by President Barack Obama.
P.L. 111-148 Patient Protection and Affordable Care Act – Full text of the law.
H.R. 4872, the Health Care & Education Reconciliation Act, was signed into law one week later. This second act reconciled the differences between the House and Senate versions of the PPACA.
Chart summarizing the differences between H.R. 3950 and H.R. 4872
On February 14, 2011, H.R. 698 was introduced into the House of Representatives seeking "To deauthorize and rescind funding" for these acts.
H.R. 698 - Summary and Full text of the bill from the Library of Congress
As of October 2011, the constitutionality of PPACA has been upheld by three out of four federal appellate courts, with the fourth declaring the law's individual mandate alone as unconstitutional. The Supreme Court has agreed to review the suits, and has scheduled oral arguments on the matter in March 2012.
California Healthcare Foundation. 2011. Implementing national health reform in California: opportunities for improved access to care. This report describes the wide-ranging implications and implementation tasks that face California under PPACA.
Timelines of U.S. Health Care Reform
A History of Overhauling Health Care from The New York Times
U.S. Health Care Reform Interactive Timeline from the New England Journal of Medicine
Implementation Timelines for the Patient Protection & Affordable Care Act (PPAC)
Health Care Implementation Timeline from Kaiser Family Foundation
Affordable Care Act Implementation Timeline from Democratic Policy Committee