McCain camp calls Biden Obama's 'harshest critic' on experience

(CNN) - Sen. John McCain's campaign quickly reacted to word that Sen. Joe Biden would be Sen. Barack Obama's running mate with a dig at Obama's foreign policy credentials.

"There has been no harsher critic of Barack Obama's lack of experience than Joe Biden," McCain campaign spokesman Ben Porritt said in a written statement.

"Biden has denounced Barack Obama's poor foreign policy judgment and has strongly argued in his own words what Americans are quickly realizing - that Barack Obama is not ready to be president."