https://www.scientificamerican.com/article/federal-appeals-court-takes-up-case-that-threatens-affordable-care-act/

The fate of the Affordable Care Act is again on the line Tuesday, as a federal appeals court in New Orleans takes up a case in which a lower court judge has already ruled the massive health law unconstitutional.

If the lower court ruling is ultimately upheld, the case, Texas v. United States, has the potential to shake the nation’s entire health care system to its core. Not only would such a decision immediately affect the estimated 20 million people who get their health coverage through programs created under the law, ending the ACA would also create chaos in other parts of the health care system that were directly or indirectly changed under the law’s multitude of provisions, such as calorie counts on menus, a pathway for approval of generic copies of expensive biologic drugs and, perhaps most important politically, protections for people with preexisting conditions.