Neither Prince George's County nor MGM National Harbor have announced an opening date for the casino yet. However, Prince George's County leaders are allowed to delay local openings if they feel it is necessary for health and safety. MGM National Harbor has a safety and reopening plan in place - and it will be allowed to reopen as early as June 19, Maryland Gov. UPDATE JUNE 23: MGM National Harbor has announced an official reopening date, safety protocols and more.
