After announcing several months ago that he intended to challenge pro-abortion Rhode Island Republican Sen. Lincoln Chafee, Rep. Jim Langevin, a pro-life Democrat, decided last month against making the run - despite the fact that he was a favorite to win. Langevin says he became pro-life after a life-altering experience. When he was sixteen years old, he was wounded by a gunshot and has been in a wheelchair ever since. He says now that the episode forced him to appreciate "how precious life is." So what prompted Langevin to abandon his Chafee challenge? Influential Democrats, upset over his pro-life stand,...