Forcing Americans to always wear clothing while swimming or sunbathing even in designated or secluded areas is as bad as forcing women to always wear burkhas.
Adam and Eve entered the world naked and unashamed—naked and pure-minded. And no descendant of theirs has ever entered it otherwise. All have entered it naked, unashamed, and clean in mind. They entered it modest. They had to acquire immodesty in the soiled mind, there was no other way to get it.