The ban for Morocco and Brazil are just work and immigration visas at the moment but tourist visas will be allowed under certain circumstances. Haitians are banned completely. Iranians are also banned from all travel to U.S. In the past that would have been enough to trigger FIFA into action but not now as they genuinely do not give a fuck about fans attending the games.
With the Poundland Mussolini now threatening tarrifs on anyone who does not support his annexation of Greenland there is a fair chance the number of other countries being added to his shit list.