Almost unbelievable, but the United States government has only just made nationwide masks compulsory on airliners, ships, taxis, trains, and other public transportation.
Former President Donald Trump blocked this move for many months. However, the local health authorities in many states made mask compulsory, but not in all parts of the country. That is changing now because the Biden administration had an obligation that applies to the entire territory of the United States of America.
Previously, however, based on the orders of the federal states, but also based on the house rules of the airlines, a mask requirement in air traffic existed. This is now anchored nationwide and is therefore out of the question. In the USA there are always problems with mask refusers. In Europe, Lufthansa passengers made two police operations in Munich and first on Monday in Frankfurt am Main.