just noticing that toaster-boy and toothless hiker are notoriously absent from a thread that should have their homo-alarms ringing off the wall.
Oh, and there are no legal arguments at all as to why homosexual behavior should be deemed as illegal. Plenty of religious dogma to throw around, but no secular reasons to justify making it illegal, ironically a few states do have laws in the books against it
Alabama (surprise, surprise)
In Alabama, state law dictates that homosexuality is not an acceptable lifestyle:
(c) Course materials and instruction that relate to sexual education or sexually transmitted diseases should include all of the following elements: [...]
(8) An emphasis, in a factual manner and from a public health perspective, that homosexuality is not a lifestyle acceptable to the general public and that homosexual conduct is a criminal offense under the laws of the state.
This is a reference to Alabama’s “sodomy law” criminalizing gay sex. This law has been unenforceable since the Supreme Court abolished sodomy laws in its 2003 ruling Lawrence v. Texas, but it remains on the books, as does the protocol to teach about it.
Arizona
According to Arizona law, not only is there nothing positive about being gay, there is no safe way to have gay sex:
C. No district shall include in its course of study instruction which:
1. Promotes a homosexual life-style.
2. Portrays homosexuality as a positive alternative life-style.
3. Suggests that some methods of sex are safe methods of homosexual sex.
The law dictates the promotion of abstinence, but ironically also seeks to “dispel myths regarding transmission of the human immunodeficiency virus.” Apparently myths about the risks of gay sex are still acceptable.
Louisiana (another shocker

)
Louisiana has a law censoring homosexuality in sex education, but it only applies to “any sexually explicit materials depicting male or female homosexual activity.” Given the law’s emphasis on abstinence from sexual activity outside of marriage and the state’s ban on same-sex marriage, non-pictorial discussions of homosexuality could probably be considered violations as well.
Mississippi (color me completely surprised

)
Mississippi law also refers back to its unenforceable sodomy law, dismissing the possibility that there is any kind of gay sex that is safe, appropriate, or legal:
(1) Abstinence education shall be the state standard for any sex-related education taught in the public schools. For purposes of this section, abstinence education includes any type of instruction or program which, at an appropriate age: [...]
(e) Teaches the current state law related to sexual conduct, including forcible rape, statutory rape, paternity establishment, child support and homosexual activity; and
(f) Teaches that a mutually faithful, monogamous relationship in the context of marriage is the only appropriate setting for sexual intercourse.
North Carolina
Like Arizona, North Carolina law implies that gay sex is inherently unhealthy:
e. Teaches that a mutually faithful monogamous heterosexual relationship in the context of marriage is the best lifelong means of avoiding sexually transmitted diseases, including HIV/AIDS.
Oklahoma
Oklahoma’s law focuses specifically on preventing the transmission of the “AIDS virus” (HIV), claiming that “homosexual activity” is among the causes primarily responsible for contact with it:
D. AIDS prevention education shall specifically teach students that:
1. engaging in homosexual activity, promiscuous sexual activity, intravenous drug use or contact with contaminated blood products is now known to be primarily responsible for contact with the AIDS virus;
2. avoiding the activities specified in paragraph 1 of this subsection is the only method of preventing the spread of the virus;
The distinction between “homosexuality activity” and “promiscuous sexual activity” implies that there is no kind of homosexual activity that is not promiscuous.
South Carolina
In South Carolina, gay people only exist when it comes to explaining sexually transmitted diseases:
(5) The program of instruction provided for in this section may not include a discussion of alternate sexual lifestyles from heterosexual relationships including, but not limited to, homosexual relationships except in the context of instruction concerning sexually transmitted diseases.
Tejas ("I don't see no horns on you")
Even though it was Texas’s sodomy law that the Supreme Court struck down over 10 years ago, that law is still part of the state’s sex education policy:
(b) The materials in the education programs intended for persons younger than 18 years of age must:
(1) emphasize sexual abstinence before marriage and fidelity in marriage as the expected standard in terms of public health and the most effective ways to prevent HIV infection, sexually transmitted diseases, and unwanted pregnancies; and
(2) state that homosexual conduct is not an acceptable lifestyle and is a criminal offense under Section 21.06, Penal Code.
Soon enough these people that enforce, support these archaic, inane laws will be dead, and the new, more enlightened generation will eventually change them for the better of all.