Homosexuality biology or choice?

Asked this question, Bush responded how most heterosexuals probably should respond by saying he didn't know. Kerry responded by saying, "I think if you were to talk to Dick Cheney's daughter, who is a lesbian, she would tell you that she's being who she was. She's being who she was born as. I think if you talk to anybody, it's not a choice." Really? So he talked to Mary Cheney about this?

Richard Cohen of the Washington Post believes that Bush should have been questioned or taken to task over his "ignorant" response. How ignorant, indeed, for a heterosexual man to say "I don't know" when asked questions about being gay. How does it feel to be pregnant, Mr. President? Haven't you been around pregnant women? What an ignorant fool if you don't know! I guess that Richard Cohen believes he is an expert on human sexuality. Personally, I think it is ignorant to believe no gays have ever chosen to be that way.

I keep seeing Democrats saying that Kerry did nothing wrong because Cheney himself brought his daughter up on the campaign trail. However, from the clip I've seen, Dick Cheney was responding to a question about his own personal views on gay issues, and it would be hard to explain where he's coming from on gay issues without explaining his daughter. Quite different than the way Kerry brought up Mary Cheney to drive home his point in a debate against President Bush. When John Edwards brought up Mary in his debate against Cheney, perhaps the Cheneys would have preferred he didn't, but he at least was using it to show why you have to respect the Cheneys. Kerry was being disrespectful in using Mary to try and score debate points, and for speaking for Mary Cheney without having talked to her about her views.