Obama focuses attack on McCain

Barack Obama ratcheted up criticism of Republican John McCain today comparing him with the unpopular Bush administration and continuing an effort to make the former war hero's opposition to a college aid bill for military veterans a campaign issue.

McCain was a Navy fighter pilot who was shot down and spent nearly six years imprisoned in Vietnam. He has stressed his impressive military record and Obama's lack of one as Obama appears close to beating Democratic rival Hillary Rodham Clinton for the presidential nomination.