On Gab I saw a fascinating post. I find it hard to believe and wonder how true it is. The person seemed knowledgeable. The person wrote this:

fun fact: it was technically illegal for homosexuals to immigrate to America until 1990, when George H.W. Bush signed the Immigration Act of 1990 which withdrew the phrase "sexual deviation" from the Immigration and Nationality Act

"sexual deviation" had been included in the Immigration and Nationality of 1965 by LBJ, as a reason for denying immigrants entry to the US on medical grounds