Indiana will join over a dozen other states in a lawsuit challenging the constitutionality of the healthcare law. 

The state's Republican attorney general said Sunday on Fox News downplayed the other state's opposition to the bill itself, instead highlighting legal arguments against it.

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"It's really part of our job description to bring these challenges," he said. "It's not something that says whether we are for or against the measure it's really to check to see whether the federal government has extended itself, using its authority, where it really doesn't have it."

The debate over the lawsuit has spread across the country as states debate weather or not to join it. Thirteen states originally filed the suit in federal court in Florida. The attorney general leading the suit, Bill McCollum, is running for governor. 

Kansas' Democratic attorney general refused to join the suit Friday after coming under pressure from Republican lawmakers there. Arizona's Republican governor this week decided to compel her state to sue after her attorney general refused to do so.

The suing states argue that the new law violates a number of provisions in the Constitution, including the commerce clause.

The Obama administration has said the suit is "completely without merit" and accused of those joining it of doing so for political gain.

Indiana's governor, Mitch Daniels, is a Republican and a potential presidential candidate in 2012. 

But Zoeller said that it was Washington that politicized the debate, not the states.

"It hasn't been politicized by the attorneys general, it's been politicized by what's been coming out of Washington," he said.