I read this article (google Al Capone in Miami – Part 3 of 4) and did not want to copy the URL. I don't know what is legal anymore.

He was getting hassled so much that I doubt if he had time to do anything. If you read the article you will realize they were on him 24/7.

Of course, after October 1930 he was toast with his 10-year sentence which to this day is the longest in history for income tax evasion.