The political challenges that may undermine health reform.

As with all major social legislation, years of decisions and disputes over implementation lie ahead for the Patient Protection and Affordable Care Act. Opponents at the state and national levels may seek the law's judicial overturn or repeal. However, a far more serious effort to undermine the law will come about through challenges to various administrative arrangements, taxes, and subsidies to fund expansions of coverage. The redistributive aspects of health reform will be especially at risk, as business interests and groups of more-privileged citizens press for lower taxes, looser regulations, and reduced subsidies for low-income people.