President Trump signed an executive order Thursday to weaken the Affordable Care Act in his biggest action yet to undo the health-care law. The most far-reaching aspect of the multi-part order is intended to allow individuals and small businesses to buy a long-disputed type of health insurance that skirts state regulations and Affordable Care Act protections. A White House official said Thursday that the order is merely the “beginning” of steps the administration intends to take on its own since congressional Republicans have failed to dismantle the 2010 law. This story will be updated.