Attorneys for states and a national business organization filed arguments with the Supreme Court Monday.
The so-called individual mandate requires people to buy health insurance by 2014 or pay a penalty.
The Obama administration filed arguments last month claiming the individual mandate is a constitutional attempt to respond to a crisis in the nation's healthcare system.
The court will hear oral arguments in the case next month.
Copyright 2012 by VERTEXNews/Newsroom Solutions
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