A federal judge in Texas is weighing a request by 20 states to suspend the Affordable Care Act (ACA), a move that could lead to "chaos" in the health insurance market, some industry experts worry. The states filed a lawsuit in February to have the health care act – also called Obamacare – declared unconstitutional. In arguments held last Wednesday, lawyers for the Republican-led states did not back off on their request for a preliminary injunction suspending the entire law.