After President Barack Obama bowed to critics in November and allowed people with canceled health insurance policies to keep their coverage for another year, the White House quickly hit the spin cycle. In a telephone briefing with reporters that same day, senior administration officials said their "enforcement discretion" allowed them to tweak the Affordable Care Act to ensure that it would be implemented with minimal disruption. Previous administrations had done the same thing with complicated new laws, they said, and the slow-motion rollout of the sprawling health care law was sure to encounter more problems along the way.