Federal appeals judges in New Orleans are entertaining the idea of striking some or all of Obamacare, appearing uncertain during oral arguments Tuesday over whether Congress intended to toss the entire healthcare law.

During the 90-minute hearing, the two Republican-appointed judges asked attorneys from both sides questions as they sought to determine whether Obamacare, and its mandate to buy health insurance coverage, was constitutional. The third judge on the 5th Circuit panel, Carolyn Dineen King, who was appointed by President Jimmy Carter, did not ask questions or make any comments about the case.