Anger over a decision to pay Bristol Palin several thousand dollars in student fees to talk to Washington University students about abstinence led to a decision Thursday night to nix Palin's appearance on a panel here next month. Washington University's Student Health Advisory Committee had extended an invitation to Palin, a spokeswoman to prevent teen pregnancy, to speak on abstinence as part of the university's Student Sexual Responsibility Week. But because of a growing controversy among undergraduates over the decision to pay for her talk with student-generated funds, the advisory committee and Palin decided Thursday night "that the message that...