(October 17, 2017, 8:58 AM EDT) -- SAN FRANCISCO — President Donald Trump’s decision ending Patient Protection and Affordable Care Act (ACA) cost-sharing reduction (CSR) payments to insurers threatens the law’s stability, is contrary to the law itself and violates the Administrative Procedure Act (APA), a coalition of 19 states claim in an Oct. 13 complaint (The State of California, et al. v. Donald J. Trump, et al., No. 17-5895, N.D. Calif.)....