NEW : Obama vows to never question the patriotism of others in the campaign . NEW : Obama camp : ` Obama said he learned that `` what makes America great has never been its perfection , but the belief that it can be made better . '' ` Of course [ the Mississippi Delta ] rejects the last 16 months 's statement '' by McCain . NEW : McCain 's campaign launches CNN to defend his military record . Clark unveils new campaign airplane .
NEW : Obama vows to never question the patriotism of others in the campaign . NEW : Obama camp : `` Of course [ the Mississippi Delta ] rejects the last 16 months 's statement '' by McCain . NEW : McCain 's campaign launches CNN to defend his military record . Clark unveils new campaign airplane .