A Virginia lawmaker is pushing legislation to add the state to an interstate compact that would exempt members from President Obama’s health care overhaul — a budding movement that’s providing states across the country with another constitutional weapon to combat the landmark law.

Delegate Christopher K. Peace, Hanover Republican, introduced a bill under which Virginia would join other states collectively seeking to create their own health care policies through federal block grants and shield themselves from any conflicting federal law or regulation.

“In its essence, it’s transferring the decision-making power and federal funds to the states,” Mr. Peace said. “Would this include everything that, say, federal health care reform has in it? Likely not.”

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