Timeline of the health care law

The Supreme Court is set to rule on the constitutionality of the controversial health care law passed in 2010.

The U.S. Supreme Court Thursday upheld the constitutionality of the Affordable Care Act, the health care law that President Obama signed in March 2010. Here's a look at key moments in the law's history:

February 24, 2009 -- In a joint session to Congress, President Obama says: "So let there be no doubt: Health care reform cannot wait, it must not wait, and it will not wait another year."

March 5, 2009 -- The Obama White House holds its first health care summit.

April 21, 2009 -- Senate Finance Committee Chairman Max Baucus and Ranking Member Chuck Grassley hold the first of three roundtables of health policy and industry experts to discuss the development of health care legislation.

July 15, 2009 -- The Senate's Health, Education, Labor and Pensions Committee passes The Affordable Health Choices Act. The bipartisan bill includes more than 160 Republican amendments accepted during the month-long mark-up, one of the longest in congressional history.

July 31, 2009 -- The bill is reported out of the House Committee on Energy and Commerce by a vote of 31 to 28.

Affordable care act: What's on the line?
Affordable care act: What's on the line?

    JUST WATCHED

    Affordable care act: What's on the line?

MUST WATCH

Affordable care act: What's on the line? 03:04
PLAY VIDEO
Health care: Key issues in SCOTUS ruling
Health care: Key issues in SCOTUS ruling

    JUST WATCHED

    Health care: Key issues in SCOTUS ruling

MUST WATCH

Health care: Key issues in SCOTUS ruling 02:43
PLAY VIDEO
Health care budget claims explained
Health care budget claims explained

    JUST WATCHED

    Health care budget claims explained

MUST WATCH

Health care budget claims explained 03:01
PLAY VIDEO
One justice may make or break health care
One justice may make or break health care

    JUST WATCHED

    One justice may make or break health care

MUST WATCH

One justice may make or break health care 02:38
PLAY VIDEO

August 15, 2009 -- During the August recess, Obama travels in support of the bill. Tea Party members and conservatives lash out against the bill at town halls. Obama battles a false rumor that the legislation includes "death panels" that could decide whether people live or die.

August 26, 2009 -- Sen. Edward "Ted" Kennedy, a leading proponent of health care legislation, dies, jeopardizing Senate Democrats' 60-seat filibuster-proof supermajority.

September 29, 2009 -- The Senate Finance Committee rejects two amendments to include a government-run public health insurance option in the sole compromise health care bill to date.

October 13, 2009 -- The Senate Finance Committee approves Baucus' landmark bill, the America's Healthy Future Act.

November 7, 2009 -- The House of Representatives passes a version of the sweeping health care bill by a vote of 220-215.

December 19, 2009 -- Senator Ben Nelson, a conservative Democrat, becomes the 60th vote needed to pass the Senate version of the health care bill.

December 24, 2009 -- The Senate passes its health care bill 60-39.

January 17, 2010 -- Obama stumps for Martha Coakley in a tight Massachusetts Senate race against Scott Brown to replace Kennedy. Brown had pledged to vote against Democratic health care efforts.

January 19, 2010 -- Brown wins the special election, jeopardizing the health care legislation.

February 25, 2010 -- Obama holds a televised heath care summit with leaders from both parties to explain the health care bill.

March 11, 2010 -- In a letter to Senate Minority Leader Mitch McConnell, Majority Leader Harry Reid says Democrats will use "reconciliation," needing only 51 votes, to pass the health care bill.

March 21, 2010 -- The Senate passes its version of the bill, sending the legislation to Obama for his signature. A separate package of changes expanding the reach of the measure also passed the House over unanimous GOP opposition, and will be taken up by the Senate.

March 23, 2010 -- Obama signs the health care bill into law.

August 12, 2011 -- The 11th Circuit Court of Appeals rules that parts of the law are unconstitutional.

November 8, 2011 -- The U.S. Court of Appeals in Washington rules that the law is constitutional.

November 14, 2011 -- The Supreme Court agrees to hear a legal challenge to the law after 26 states, led by Florida, petitioned the high court.

March 26, 2012 -- The Supreme Court begins three days of oral arguments over the constitutionality of the law.

June 28, 2012 -- The Supreme Court rules that the individual mandate portion of the health care law may be upheld within Congress' power under the taxing clause.

        The Affordable Care Act

      • ac kth health care tax _00002803

        What the Supreme Court ruled on health care 'tax'

        In its ruling last week on the national health care law, the Supreme Court found that penalties the law places on people who don't buy health insurance count as a tax protected by the Constitution.
      • Chief Justice John Roberts

        Chief Justice Roberts: The decider

        With his opinion for a narrow majority of the Supreme Court, Chief Justice John G. Roberts Jr. has, for the first time since his confirmation as chief justice in 2005, breached the gap between the conservative and liberal wings of the court on a polarizing political issue.
      • sot Obama healthcare upheld_00003211

        Obama: Ruling a victory for all Americans

        In a landmark ruling that will impact the November election and the lives of every American, the U.S. Supreme Court on Thursday upheld the controversial health care law championed by President Barack Obama.
      • WASHINGTON, DC - JUNE 28: Tea Party activist William Temple, protests in front of he U.S. Supreme Court, on June 28, 2012 in Washington, DC. Today the high court is expected to rule on the constitutionality of the sweeping health care law championed by President Barack Obama.

        Liberty lost? The Supreme Court punts

        The court's opinion, in preserving the Patient Protection and Affordable Care Act, under Congress' taxing power, still gives a virtually unlimited sway to the power of the federal government, Stephen Presser writes.
      • The AARO has spent about $10.3 million on ads in favor of the Affordable Care Act.

        By the numbers: Health insurance

        The Supreme Court is set to rule on the constitutionality of the Patient Protection and Affordable Care Act on Thursday. The landmark decision will dictate the way health care is administered to millions of Americans.
      • WASHINGTON, DC - MARCH 27:  General public with tickets to listen to a hearing on the Obamacare line up for entering the U.S. Supreme Court March 27, 2012 in Washington, DC. The Supreme Court continues to hear oral arguments on the Patient Protection and Affordable Care Act.  (Photo by Alex Wong/Getty Images)

        Basics: Health care reform issues

        A look at the four issues the high court tackled separately during oral arguments in late March. Those issues are expected to play key roles in the judges' final decisions.