The U.S. Supreme Court signaled Monday it’s prepared to make it easier for President Trump to fire independent government officials, despite laws barring the president from removing them without cause. On Monday, the court heard oral arguments in the case of Federal Trade Commission member Rebecca Kelly Slaughter, who was fired by the White House in March. The court’s right-wing majority cast doubt on a 90-year-old precedent known as Humphrey’s Executor, which grants a president the power to fire a board member only for “inefficiency, neglect of duty, or malfeasance in office.” Liberal Justice Sonia Sotomayor warned that move would “destroy the structure of government,” while Justice Elena Kagan warned it would grant the president near-unlimited power.

Justice Elena Kagan: “So, the result of what you want is that the president is going to have massive, unchecked, uncontrolled power not only to do traditional execution, but to make law through legislative and adjudicative frameworks.”

A ruling in the case is expected by June; until then, the Supreme Court has allowed the White House’s firing of Rebecca Kelly Slaughter and other commissioners to remain in effect.