The latest push to scrap the ACA once and for all pressed ahead Wednesday as Republican-controlled states asked a federal judge to finish what Congress started last year and bring the law that insures 20 million Americans to a halt.... At issue are core principles of the law, including protections for people with pre-existing medical conditions and limits on how much older customers can be charged. U.S. District Judge Reed O’Connor made no immediate ruling following a four-hour hearing. Twenty GOP-led states brought the lawsuit, arguing that the entire health care law was rendered unconstitutional after Congress repealed the “individual mandate” that required most Americans to buy insurance or risk a tax penalty. (Paul J. Weber, Associated Press)