That would depend on your definition of force. Children in government schools are forced to learn homosexuality is normal. And what some school officials tell us, there's nothing we can do about it.
The facts are there is no gay gene and no credible science claims a gay gene exists. No credible scientist claims gays are born that way. As TChris has already told you, the only evidence somebody has to prove they're gay is their word, which is the exact same evidence an ex-gay has.
Children are encouraged to try homosexuality. Some previous questionaires have asked children if they haven't tried homosexuality, how do they know they wouldn't like it.
The following links provide plenty of evidence of the gay agenda targeting children:
Targeting Children, Part 1: How the gay movement intends to capture the next generation
Targeting Children, Part 2: How the homosexual movement uses public schools as instruments of change
Targeting Children, Part 3: Activists encouraging experimentation
Targeting Children, Part 4: Access to children: homosexuality and molestation
I highly recommend you read this: How Might Homosexuality Develop? Putting the Pieces Together. The good news is the APA Has No Disagreement With the Treatment of Unwanted Homosexual Attraction.
I have a copy of that as well. It's by far the most compelling explanation of the subject I have ever read.