The U.S. Supreme Court’s landmark decision holding that employers can’t discriminate against workers based on their sexual orientation or gender identity has a glaring loophole: It doesn’t apply to small businesses that employ as many as one in six Americans. A 1960s-era ban on sex discrimination in the workplace was extended to millions of LGBT workers with the court’s 6-3 decision on Monday — the most significant LGBT ruling since same-sex marriage was legalized in 2015. But the law doesn’t cover companies with fewer than 15 employees. Nor did the decision address other civil rights questions, such as whether LGBT people can be refused access to housing or denied services from businesses including restaurants or movie theaters, and whether discrimination is justified by religious beliefs.