Honestly not sure. He had a job w the New York Daily News after Cuba, in the printing press... which was all Union. I’m not sure if the job was any more than for show. I do know they were still active with their other activities at that time tho.
My grandfather worked w Meyer Lanskey. Here and in NY, and the casinos in Cuba (before Castro took over). Def heard a lot about rackets, but not a lot about tennis.