PHILADELPHIA (AP) -- A gun-control activist who championed the cause for more than a decade and served on the boards of two anti-violence groups is suspected of working as a paid spy for the National Rifle Association, and now those organizations are expelling her and sweeping their offices for bugs. The suggestion that Mary Lou McFate was a double agent is contained in a deposition filed as part of a contract dispute involving a security firm. The muckraking magazine Mother Jones, in a story last week, was the first to report on McFate's alleged dual identity. The NRA refused to...