WASHINGTON (AP) _ Acting only hours after another school shooting, the Senate today approved tighter restrictions on firearms transactions at gun shows and pawn shops. Democrats said the measure still enables people to buy guns without undergoing background checks.

By 79-29 vote, the Senate passed a Republican amendment to a juvenile crime bill that would require background checks on all firearms dealings at pawn shops and gun shows, reversing a proposal it passed a week earlier.

The measure was adopted after a shooting at a high school in Conyers, Ga., about 35 miles east of Atlanta.