Homosexuality is clearly a disorder (isn't any feature of our physiology out of order if it can't perform the function it was designed to do?), we're just not exactly sure where things went haywire yet.
Yes, but a gay cabal in the American Psychiatric Association got it delisted as a paraphilia from the standard Diagnostic and Statistical Manual ("DSM") in 1973, and they have stood guard over that delisting ever since, using certain gay-dominated standing committees to cut off and throttle dissenters' attempts to discuss it. Research, however, continues.
Notwithstanding the gay propaganda within all three APA's (the aforementioned APA, plus the American Psychotherapy Association and the American Psychological Association, which pilloried and expelled dissenting researcher Paul Cameron 20 years ago), a survey of opinion within the American Psychiatric Ass'n. a few years ago, which was posted on their site until a year or so ago, showed that in the debate over essentialism (nature versus nurture), large pluralities of mental-health professionals continue to believe that there is a large, and possibly critical, psychological element in homosexuality. In other words, there remains, despite organizational and political pressure, a substantial dissent within the first professional bodies that the gays "went after" in their campaign to "overhaul America" on the subject of homosexuality.