Image by SalFlako via Flickr Think the only big lawsuit pending on the Affordable Care Act is the Texas fight over whether the whole law is unconstitutional? Think again. Several lawsuits are still working their way through the courts involving the unpaid cost-sharing reduction (CSR) subsidies, and risk corridor payments. Potentially, the Trump administration could be forced to pay insurers billions of dollars. (Paul Demko has reported on this extensively for Politico, and this post cribs shamelessly — but gratefully…