In file photo, President Barack Obama signs the health care...

In file photo, President Barack Obama signs the health care bill in the East Room of the White House in Washington. (March 23, 2010) Credit: AP Photo

A three-judge panel of the federal appeals court based in Atlanta ruled Friday that the health-care overhaul law's individual mandate is unconstitutional, in one of the largest legal challenges to the Obama administration's signature achievement.

This is the second federal appellate court to rule on the law; the first decision, by a Cincinnati-based court, upheld the measure. It is also the most high-profile ruling, responding to a challenge to the law brought by 26 states. The law's constitutionality is likely to be ultimately decided by the U.S. Supreme Court.

In its 2-1 ruling, the panel of the Atlanta-based 11th Circuit Court of Appeals sided with a federal district court in Florida. Both ruled that the mandate of individuals' buying health insurance is not authorized under the Constitution's Commerce clause, which allows the federal government to regulate interstate commerce.

The appellate court did, however, overturn part of the lower court's ruling by declaring that the rest of the law could continue to stand without the individual mandate.

"This economic mandate represents a wholly novel and potentially unbounded assertion of congressional authority: the ability to compel Americans to purchase an expensive health insurance product they have elected not to buy, and to make them repurchase that insurance product every month for their entire lives," the panel majority wrote in the 304-page decision.

The health care law's individual mandate requires the vast majority of Americans to buy health insurance in 2014. Those who do not will be subject to a fine.

The White House swiftly denounced the ruling, saying it was confident that "it will not stand."

"The individual responsibility provision -- the main part of the law at issue in these cases -- is constitutional," assistant to the president Stephanie Cutter wrote in a White House blog post. "Those who claim this provision exceeds Congress' power to regulate interstate commerce are incorrect. Individuals who choose to go without health insurance are making an economic decision that affects all of us -- when people without insurance obtain health care they cannot pay for, those with insurance and taxpayers are often left to pick up the tab."

The next ruling will likely come from the Fourth Circuit Court of Appeals, which heard oral arguments on Virginia Attorney General Ken Cuccinelli's challenge on May 10. The panel there, made up of three Democratic appointees, is likely to rule by the end of September.

Another case in the District of Columbia's Third Circuit Court of Appeals has arguments scheduled for Sept. 23.

The Supreme Court is expected to take up the case in its next term, which begins this October and ends in June 2012.

U.S. cuts child vaccines ... Malverne hit-and-run crash ... Kids celebrate Three Kings Day Credit: Newsday

Updated 4 minutes ago Suozzi visits ICE 'hold rooms' ... U.S. cuts child vaccines ... Coram apartment fire ... Out East: Custer Institute and Observatory

U.S. cuts child vaccines ... Malverne hit-and-run crash ... Kids celebrate Three Kings Day Credit: Newsday

Updated 4 minutes ago Suozzi visits ICE 'hold rooms' ... U.S. cuts child vaccines ... Coram apartment fire ... Out East: Custer Institute and Observatory

SUBSCRIBE

Unlimited Digital AccessOnly 25¢for 6 months

ACT NOWSALE ENDS SOON | CANCEL ANYTIME