Emotions were high on Wednesday at the Capitol.
When the background check amendment failed in the Senate, Patricia Maisch, watching from a visitors' gallery, shouted "Shame on you!" Maisch helped restrain the gunman at the 2011 Tucson shooting in which six people died and 13, including Giffords, were wounded.
Associated Press writers Donna Cassata, Laurie Kellman, Richard Lardner and Andrew Taylor contributed to this report.
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