US Supreme Court backs protection for LGBT workers
bbc.com
bbc.com
From the impression I got (and I only read the outline of the decision), the most important part seems to be:
> A statutory violation occurs if an employer intentionally relies in part on an individual employee’s sex when deciding to discharge the employee. Because discrimination on the basis of homosexuality or transgender status requires an employer to intentionally treat individual employees differently because of their sex, an employer who intentionally penalizes an employee for being homosexual or transgender also violates Title VII.
I feel like that's more an interpretation of the law than redefinition of it