McCain noted that presidents often blur the line between performing their executive duties and campaigning, but said that Obama had taken it to an unprecedented level in his trip to tout his $447 billion "jobs" package."

“I do not believe any of us have seen the sort of activity the president is engaged in and all of it charged to the taxpayers of the United States of America,” said McCain. “[A]t least the campaign should be paying for this sort of campaigning”

On Monday, McCain also remarked that Obama's jet-black Secret Service-provided bus, dubbed “the behemoth,” was the ugliest he had ever seen.

“I must say again that I have never seen an uglier bus,” said McCain.