President Barack Obama made a rare weekend appearance in Congress Sunday, at the special request of Senate Majority Leader Harry Reid. Obama called the health-care bill the "most significant social legislation in decades" and told lawmakers—"don't lose it." He urged liberal and moderate Democrats to work toward a compromise and emphasized that they should do so quickly. Republicans remain staunchly opposed to the bill, saying the government can’t afford it. Liberal Democrats are still holding out for the public option, which Obama did not mention in his speech, despite his earlier vocal support for it.