WASHINGTON—Amid a MAGA-led backlash to diversity, equity and inclusion policies, the Supreme Court signaled it would rule that white people and members of other majority groups who file reverse-discrimination lawsuits shouldn’t face tougher legal scrutiny than Black and other minority employees with bias claims.

The Supreme Court on Wednesday appeared to support the idea of making it easier for men and people who are White or straight to sue for job discrimination, based on oral arguments in the case of an Ohio woman who claims she faced anti-straight bias in the workplace.

The Supreme Court appeared virtually certain to side with an Ohio woman who lost a “reverse discrimination” suit against her employer when her gay boss declined to promote her, a decision that will likely make it easier for some White and straight employees to win similar claims.