WASHINGTON - The White House struck back Tuesday at Democratic critics questioning President Bush (news - web sites)'s record of military service, saying the issue "represents the worst of election-year politics." "It is outrageous and baseless," presidential spokesman Scott McClellan said in response to suggestions that Bush shirked his military duties when he was in the Texas Air National Guard in 1972. Military service has emerged as an issue in the campaign for the White House. Sen. John Kerry (news - web sites), the front-runner in the race for the Democratic presidential nomination, and retired Army Gen. Wesley Clark (news...