The Arizona Senate has voted to make it illegal to sell a weapon at a gun show without verifying that the purchaser is an American citizen.
Senators gave preliminary approval to the measure in a 15-14 vote on Thursday. Their vote attaches the provision to another bill that would allow people to carry a concealed weapon without a permit.
The amendment was sponsored by Phoenix Democrat Ken Cheuvront (shev RONT).
Cheuvront says the amendment is designed to cut down on the number of guns bought in the United States and sold in Mexico.
Mesa Republican Sen. Russell Pearce says Cheuvront has a worthy goal. But Pearce opposed attaching the provision to his bill allowing people to carry concealed guns without permits.
Senators still must give the bill formal approval.