"Although it seems likely that most of the causes of discrimination based on sexual orientation ultimately stem from employers' and co-workers' discomfort with a lesbian woman's and or a gay man's failure to abide by gender norms, we cannot say that it must be so in all cases. Therefore we cannot conclude that the two must necessarily be coextensive unless or until either the legislature or the Supreme Court says it is so," wrote U.S. Judge Ilana Rovner in the opinion.