Friday interview on PBS, McCain had said that Adelson's contributions to Romney's presidential ambitions amounted to "foreign money" influencing a U.S. political campaign.

That remark seemed to be somewhat at odds with Romney's assertion at the Iowa State Fair last year that "corporations are people, my friend."

"I think that in that context he was talking about they are made up of people and that’s true in that context," McCain explained. "But to be corporations for purposes of involving campaigns, to be treated the same as people, I just don’t agree with that."