W'on,
I googled ' "May Act" WWII legislation prostitution ' and got quite a few hits. This below is from the first, way down the page:
In July, at the instance of the American Social Hygiene Association, the May Act, making prostitution a Federal offense in the areas in which it was invoked, was passed by Congress. It was supported by the Surgeons General of the Army, Navy, and U.S. Public Health Service. The War Department shortly afterward issued instructions to commanders of corps areas as to the procedure for invoking the act, and a Division of Social Protection was set up in the Office of Defense Health and Welfare Services in the fall to aid in the repression of commercialized prostitution by working through State and local authorities. The Army was unwilling to invoke the act, however, except as a last resort in areas where local authorities had unquestionably failed to cooperate in its program. It was sensitive to the reaction of local communities, some of which insisted that they wanted to take repressive measures themselves and wanted only the Army's moral backing. Although Charles P. Taft, Assistant Director of the Office of Defense Health and Welfare Services (like the U.S. Public Health Service, under the jurisdiction of the Federal Security Administrator), apparently agreed with the Army's position, in the latter part of 1941 Drs. Thomas Parran and R. A. Vonderlehr, Surgeon General and Assistant Surgeon General of the U.S. Public Health Service, criticized the Army in a jointly written book, "Plain Words About Venereal Disease," for its failure to invoke the May Act.
The url's long and I haven't braved trying makeashorterlink yet. But the site is the first you'd get if you googled just as I did above.
