He wanted desperately to invade Cuba in the weeks leading up to Kennedy's inauguration; indeed, on January 3 he told Lemnitzer and other aides in his Cabinet Room that he would move against Castro before the inauguration if only the Cubans gave him a really good excuse.
Then, with time growing short, Eisenhower floated an idea. If Castro failed to provide that excuse, perhaps, he said, the United States "could think of manufacturing something that would be generally acceptable."