Transgender
One effort to quantify the population gave a "rough estimate" that 0.3 percent of adults in the US are transgender, overlapping to an unknown degree with the estimated 3.5 percent of US adults (1-in-30) who identify as LGBT. More recent studies released in 2016 estimate the proportion of Americans who identify as transgender at 0.5 to 0.6%. This would put the total number of transgender Americans at approximately 1.4 million adults ().
Transgender disenfranchisement in the United States
The first case to deal with legal recognition of transgender identity in the United States was "In re Anonymous v. Weiner" in 1966. A post-operative male-to-female trans woman applied for a change of sex on her birth certificate through the Bureau of Vital Statistics in the New York City Health Department. The Bureau turned to the Board of Health who then called on a committee on public health of the New York Academy of Medicine to make a recommendation. The application was ultimately denied and the Board of Health stated that "an individual born one sex cannot be changed for the reasons proposed by the request which was made to us. Sex can be changed where there is an error, of course, but not when there is a later attempt to change psychological orientation of the patient and including such surgery as goes with it."