President Barack Obama (D) was in Virginia Friday calling on the U.S. House to pass the controversial health care reform bill.

Meanwhile, Virginia Attorney General Ken Cuccinelli (R) is preparing to mount a legal fight if the bill passes.

Cuccinelli says the health care bill is unconstitutional.

Specifically, he says the mandate that people buy health insurance goes beyond the Commerce Clause. That is the power Congress has to regulate interstate business.

"This will affect everyone in Virginia. So in that sense, it's also very local in its impact," says Cuccinelli. He was in Harrisonburg Friday night for a fund-raising event.

The Virginia General Assembly recently passed a law saying it is illegal for the federal government to require people to buy health insurance.

"And as everybody remembers from civics class, normally the federal law trumps, but not when it is beyond the scope of the constitutional authority of Congress to enact in the first place," says Cuccinelli.

James Madison University political analyst Bob Roberts points out the Commerce Clause was the basis for starting programs like Social Security.

"So if you take one down, you've got to take down the other. In other words, you just can't say, 'You can't do health insurance,' because any decision to say that would basically open the door for tens of millions of people to begin to refuse to participate in the Social Security system," says Roberts.

Roberts says because of an issue like that, it's unlikely the U.S. Supreme Court would overturn the health care bill.

But Cuccinelli still says this fight could go that far.

"The approach the government is taking in Washington right now is more of what hasn't worked. We need to undue a lot of what has been done in the past and free up the market to help provide more solutions," says Cuccinelli.

Cuccinelli says the first step in this process would be to file a lawsuit in federal court in the Eastern District of Virginia.

If one side doesn't like how the case turns out, the case could be appealed to the 4th U.S. Circuit Court of Appeals. From there, it has the potential to advance to the U.S. Supreme Court.

Cuccinelli says Virginians are looking at a court battle that could last for years.