
1) AFL-CIO court case
Found on
https://www.crosswordclues.com/clue/union-suit

A union suit is a type of one-piece long underwear. Created in Utica, New York, United States, it originated as women`s wear during the 19th-century United States clothing reform efforts, as an alternative to constricting garments, and soon gained popularity among men as well. The first union suit was patented in 1868 as `emancipation union unde.....
Found on
http://en.wikipedia.org/wiki/Union_suit

A union suit, also known as combinations or long Johns, is a man's close-fitting, knitted undergarment combining a shirt and long-legged drawers in one piece often with a drop seat. The union suit is intended for warmth and is typically worn in cold climates.
Found on
http://www.probertencyclopaedia.com/browse/PU.HTM

a close-fitting, knitted undergarment combining shirt and drawers in one piece and often having a drop seat.
Found on
https://www.infoplease.com/dictionary/union-suit
No exact match found.