PHOENIX -- The governors of Arizona and Nevada say their states will join 14 others suing the federal government over health care reform. Gov. Jan Brewer announced Arizona was joining the suit Tuesday night. She signed a bill April 1 that gave her the authority to skirt the state's Democratic attorney general, Terry Goddard, who declined to sue on the state's behalf. Republicans say the bill signed by President Obama is unconstitutional in part because it requires people to buy private health insurance. Goddard and other Democrats say a suit would be unlikely to succeed and thus a waste of taxpayer money. Also Tuesday, Gov. Jim Gibbons signed an executive order for Nevada to join the multistate challenge to the federal legislation. Nevada Attorney General Catherine Cortez Masto, a Democrat, refused an earlier directive from Gibbons to join the suit.