"Of course, the president keeps telling people he would never question my service to our country. Instead, he watches as a Republican-funded attack group does just that. Well, if he wants to have a debate about our service in Vietnam, here is my answer: 'Bring it on.'" -- Sen. John Kerry Dear John, As usual, you have it wrong. You don't have a beef with President George Bush about your war record. He's been exceedingly generous about your military service. Your complaint is with the 2.5 million of us who served honorably in a war that ended 29 years...