White House chief of staff John Sununu disagrees, the sources say. In his view, Cuomo’s lack of foreign-policy experience, weak gubernatorial record and liberal leanings would make him an easy target. He also thinks that the thin-skinned Cuomo would be easily rattled by a GOP attack strategy. “It would be the Opposition Researchers Full Employment Act,” says one Bush adviser. But the latest word from the Cuomo camp is that Mario won’t run in ‘92.