CNBC reports:

The Supreme Court on Monday took up job discrimination cases that could for the first time resolve at a national level whether lesbian, gay, bisexual and transgender workers can be fired based on their identity.

The cases come as federal courts as well as independent agencies within the Trump administration remain divided over whether Title VII of the Civil Rights Act, which says that employers may not discriminate based on “sex,” prohibits discrimination based on sexual orientation and gender identity.

There is no national law that explicitly bars discrimination on those grounds. State and local laws barring such discrimination do exist. About half of the country’s LGBT population lives in states that allow employment discrimination based on sexual orientation or gender identity, according to MAP, an LGBT advocacy think tank.