WASHINGTON - An alternate delegate to the Democratic National Convention says he's been forced out of his job at the U.S. Conference of Catholic Bishops for his support of presidential candidate John F. Kerry. Ono Ekeh, 33, of Waldorf, Md., said his employers at the Washington-based conference accused him of using the organization's computers to moderate a "Catholics for Kerry" electronic message board. Ekeh had been program coordinator for the Secretariat for African American Catholics, an arm of the U.S. Conference of Catholic Bishops, for three years when he was asked to resign from the $54,000-a-year post on March 9....