"Liberal groups are emphasizing states' rights, a theme calculated to appeal to conservative Supreme Court justices. The insurance industry, once a foe, has come to the aid of President Obama. Conservatives are mining legislative history to discern the intent of Democrats who wrote the [ACA]. And those Democrats are firing back, saying they know exactly what their intent was: to provide affordable health insurance to all Americans.... Such arguments are set forth in legal briefs flooding into the nation's highest court ahead of oral arguments March 4 that will challenge the payment of subsidies for health insurance in more than 30 states and could determine the fate of the health care law."