The federal government forms for applying for health coverage are seen at a rally held by supporters of the Affordable Care Act, widely referred to as “Obamacare”, outside the Jackson-Hinds Comprehensive Health Center in Jackson, Mississippi, on Oct. 4, 2013. President Donald Trump’s new executive order instructing federal agencies to grant relief to constituencies affected by the Affordable Care Act has begun to reverberate throughout the nation’s health care system, injecting further uncertainty into an already unsettled insurance landscape.