The Senate voted 54-46 in favor of the amendment from Sens. Joe Manchin, D-W.Va., and Pat Toomey, R-Pa., which would expand background checks to all online and gun-show sales. However, the bill failed as it required 60 votes for approval.
Patricia Maisch, of Tucson, Arizona, a survivor of the Tucson shooting who removed the magazine from the gun that shot Rep. Gabby Giffords, said she shouted at the senators because they were an embarrassment to the United States.
"Because they are an embarrassment to this country," she said. "They don't have any compassion or care for people who have been taken brutally from their families."
Lori Haas of Richmond, Virginia said she yelled out for her daughter Emily, who was shot but survived the Virginia Tech massacre.
"We are sick and tired of the death in this country and these legislators stand up there and think it's a bunch of numbers. There's been 187,000 Americans killed since Virginia Tech. My daughter was shot and injured six years ago yesterday. It's a shame, it's appalling, it's disgusting," she said.
Both women were expelled from the Capitol after Vice President Joe Biden, who was presiding in the senate, called for order. Reportedly, they were not arrested.
Speaking at the White House later that day, President Barack Obama said the Senate's vote had been "shameful," but that it was just round one of the fight.