Obamacare is back in court.

This month, the U.S. District Court for the District of Columbia ruled that the Republican-controlled House of Representatives has standing to sue the Obama administration over how it spent federal money implementing the Affordable Care Act. The lawsuit, brought by House Speaker John Boehner (R-Ohio), challenges billions of dollars the administration gave to insurers to reduce out-of-pocket costs for almost 6 million low-income Americans.