Legal experts say the measure, signed Wednesday, will likely be struck down. But Idaho's new law reflects growing frustration with President Barack Obama's health-care proposal.
Legislation similar to Idaho's is pending in as many as 37 other states nationwide.
Democrats in the nation's capital are hoping to pass health care reform by this weekend.
The American Legislative Exchange Council created the model legislation for Idaho and other states. The Washington, D.C.-based, nonprofit says Idaho is the first to sign a version into law.
