Horrific slice of history.
Under the 'American Plan,' women could be detained for sitting in a restaurant alone, changing jobs—or, often, for no reason at all.
And some of the enabling legislation is still on state statute books. Scott W Stern writes on History.com:
For much of the 20th century in America, a little-known but widespread government program locked people up without trials simply for having sexually transmitted infections—and then forced them to undergo dangerous, poisonous “treatments.”
If they were women, that is.
The American Plan began in 1918: federal officials began pushing every state in the nation to pass a “model law,” which enabled officials to forcibly examine any person “reasonably suspected” of having an STI. Under this statute, those who tested positive for an STI could be held in detention for as long as it took to render him or her noninfectious. (On paper, the law was gender-neutral; in practice, it almost exclusively focused on regulating women and their bodies.)
And of course, 'reasonably suspected' meant in practice 'for any reason or no reason at all'.
Long article at the link. The final paragraph is chilling:
Enforcement of the American Plan ended by the 1970s, amid the rise of the Civil Rights Movement, the women’s lib movement and the sex-workers-rights movement. It had lasted in many places for half a century; but today, half a century later, few people have ever heard of it. Even fewer are aware that the American Plan laws—the ones passed in the late 1910s, enabling officials to examine people merely “reasonably suspected” of having STIs—are still on the books, in some form, in every state in the nation. Some of these laws have been altered or amended, and some have been absorbed into broader public-health statutes, but each state still has the power to examine “reasonably suspected” people and isolate the infected ones, if health officials deem such isolation necessary.
America's Forgotten Mass Imprisonment of Women Believed to Be Sexually Immoral