No required training in the States that I'm aware of and there are a surprising number of people who can't swim. Most people who can't are in landlocked states

No required training in the States that I'm aware of and there are a surprising number of people who can't swim. Most people who can't are in landlocked states and whose family either does not go to public pools or none of the family has a private pool. No pool, no beach, no "real reason" to learn to swim.