The United States overthrew the President of Guatemala so that they could protect various U.S. business interests. The ability to stop communism is also cited as he was promoting and was elected for some of the more communist policy changes that he wanted to make. Another threat of Communism so close to home could not be had. There were too many problems with Cuba.
We have helped many rebellions to overthrow leaders that were not in line with US businesses or our political ideals.