Ummm...
In Clawson, Mich., there is a law that makes it LEGAL for a farmer to sleep with his pigs, cows, horses, goats, and chickens.
Uncertain in Salem
There was once a law in Salem Virginia that made it illegal to leave home without knowing where you were going.
Uncopyrightable
‘Uncopyrightable’ is the only fifteen letter word which is spelled without repeating a singal letter.
United Kingdom
Citizens Band Radios, walkie-talkies, microbugs, and radio microphones that are capable of transmitting on any frequency between 26.1 and 29.7 megacycles per second and 88 to 108 Mhz per second.
Goods made in foreign prisons, except those imported for a non-commercial purpose or of a kind not manufactured in the UK.
Horror comics and matrices.