'Our progress in degeneracy appears to me to be pretty rapid. As a nation, we began by declaring that "all men are created equal." We now practically read it "all men are created equal, except negroes". When the Know-Nothings get control, it will read "all men are created equal, except negroes, and foreigners, and Catholics."' - Abraham Lincoln
Whether the word “sex” was understood at the time Title 7 was crated, passed, and signed into law, to encompass sexual orientation is very much germane to the dialogue.
Why? What makes original understanding trump logic?
Suppose historical research were to show that the Continental Congress understood "all men are created equal" to not include Negroes. Would that make Lincoln's criticism of that interpretation unreasonable? What's wrong with treating words as meaning what they plainly say, when what they plainly say is better than what the authors intended? If the Continental Congress didn't intend to include Negroes, they could have said so. The fact that they chose not to indicates either that they meant to include Negroes, or else that they were hypocritically pretending to be more idealistic than they actually were. So why should those of us who come later reward them for their hypocrisy by reading according to what they meant rather than according to what they said?
There's a principle in law that when there's ambiguity in a contract, the court will read the contract against the side that composed the contract, and in favor of the side that just had the contract shoved under their noses. Well, if the authors of Title 7 who wrote "unlawful to discriminate because of sex" actually intended that phrase to mean "unlawful to discriminate because of sex except it's okay to prohibit your male employees but not your female employees from humping men", those legislators are the side that wrote the statute. The male employees being discriminated against are the side that got the statute shoved under their noses. The court should read the statute against the side that wrote it. The legislators could have written "No discriminating on the basis of sex, except it's okay to prohibit your male employees but not your female employees from humping men" if they'd wanted to make their meaning clear. Why should those of us who come later reward them for their ambiguity?
So, an analogy used at oral argument was a man isn’t hired because he likes to sew. The Court has held mixed motives are covered by the statute as they construed “because of” to mean the protected class is a factor, a cause, a motive, and it is not necessary the protected class be the only cause, factor, motive, or even the primary cause, factor, or motive.
Good analogy.
Another possible reply is sexual harassment comes within the meaning of the statute, where the woman is harassed because she’s a woman, since the classic harm to be addressed by the statutes is men and women are treated differently because the person is a male and/or a female.
Good reply.
Alito, perhaps using a hypo inspired by Rawls’ veil of ignorance, said imagine all the employer knows is that the person wanting the job isn’t heterosexual but gay and the employer has no idea the sex of the person wanting the job. The person is denied the job. There’s be no Title 7 violation, as was conceded at argument, thereby showing, for Alito, at least in part, the statute doesn’t include sexual orientation.
"As was conceded at argument"? Conceded by whom, the plaintiffs' attorney? The plaintiffs' attorney's mistakes aren't intellectually binding on the rest of us. When Alito makes an illogical argument, if counsel fails to spot the fallacy then that's two wrongs, not a right that the nation has to stipulate is established fact.
Let's take your earlier example. Imagine what the employer knows is that the person wanting the job is a man and he likes to sew. The person is denied the job because the employer thinks sewing is an unsuitable hobby for a man, but if the person had been a woman who sewed she'd have been hired. A Title 7 violation, yes? It's covered by the statute as the Court construed “because of” to mean the protected class is a factor, yes? The classic harm to be addressed by the statute is men and women being treated differently because the person is a male and/or a female, yes?
Now let's flip it around. Imagine what the employer knows is that the person wanting the job is a woman and she likes to restore muscle cars. The person is denied the job because the employer thinks restoring muscle cars is an unsuitable hobby for a woman, but if the person had been a man who restored muscle cars he'd have been hired. Still a Title 7 violation, yes? It's covered by the statute as the Court construed “because of” to mean the protected class is a factor, yes? The classic harm to be addressed by the statute is men and women being treated differently because the person is a male and/or a female, yes?
Now let's imagine that somehow, remarkably, all the employer knows is that the person wanting the job is either a man who likes to sew or a woman who likes to restore muscle cars, but the employer has no idea which. The person is denied the job because the employer thinks sewing is an unsuitable hobby for a man and restoring muscle cars is an unsuitable hobby for a woman, and therefore infers that the applicant has a gender-inappropriate hobby without needing to know the applicant's sex. But if the person had been the other sex then he or she would have been hired. Well then, that's still a Title 7 violation. The mere circumstance that the employer
doesn't know which Title 7 violation he or she's committing can hardly change the fact that it's one or the other: it's either discriminating against somebody because he's a man or discriminating against somebody because she's a woman. No matter which sex the applicant is, men and women are treated differently because the person is a male and/or a female, yes?
Which brings us back to Alito. Imagine all the employer knows is that the person wanting the job isn’t heterosexual but gay and the employer has no idea the sex of the person wanting the job. The person is denied the job. Of course that would be a Title 7 violation. A partner whom the employer considers unsuitable for the applicant's sex is no different in this respect from a hobby the employer considers unsuitable for the applicant's sex -- the employer merely
not knowing which sex role stereotype he or she is enforcing doesn't change the fact that what's being enforced is a sex role stereotype. Men and women are treated differently because the person is a male and/or a female. That's the classic harm to be addressed by the statute. So if the plaintiffs' attorney conceded Alito's point, the plaintiff's attorney erred.