Los Angeles County Sheriff's volunteers catalogue guns being traded in at the 'Gifts for Guns' gun buyback in Compton, California, January 21, 2013. People can trade in their guns anonymously and with no questions asked in exchange for $200 gift cards for assault weapons, $100 gift cards for shotguns, handguns and rifles, and $50 for non-operational firearms. U.S. President Barack Obama is pushing to address controversial issues surrounding gun violence and regulation as he begins his second term in office. REUTERS/David McNew (UNITED STATES - Tags: POLITICS SOCIETY) Published: Led. 21, 2013, 10:48 odp.