A federal appeals court temporarily blocked the Biden administrations new vaccine rule for large employers from moving forward on Saturday.

A group of companies sued the Occupational Safety and Health Administration on Friday seeking an injunction against the rule. A panel of three judges with the 5th Circuit U.S. Court of Appeals in New Orleans did not rule on that request but issued a stay against the vaccine rule, saying there may be grave statutory and constitutional issues with the Mandate.

The court gave the Biden administration until 5 p.m. Monday to respond to the petitioners request for a permanent injunction that would block the rule from taking effect. The request was filed by a group of employers and Republican state attorneys general who argue the rule is unconstitutional.