The question of whether the Consumer Financial Protection Bureau is constitutional is once again being raised, this time in a lawsuit filed against it by a California firm that provides debt collection support to law firms.

The complaint was filed on Monday in U.S. District Court for the District of Columbia by Kimberly Pisinski, a bankruptcy attorney based in Enfield, Connecticut, and Morgan Drexen, a firm based in Costa Mesa, California and incorporated in Nevada. Pisinski retains Morgan Drexen as a non-lawyer assistant that provides her with paralegals and support staff.