First lady Laura Bush is wildly popular with the American people, but not with New York Times columnist Maureen Dowd, who called her a GOP "attack dog" this week for speaking out on stem cell research. "She's been dragged out to be a Republican attack dog on the most contentious issue, stem cell research, defending her husband's, you know, refusal to use more [stem cell] lines," Dowd told CBS "Early Show" host Hannah Storm while promoting her new book "Bushworld." "I think it's a huge mistake," warned the top Timeswoman. "Laura is this fantastic, nice, Marian-the-librarian-type who was curled up...