Congress is preparing for what could be a dramatic overhaul of its operations following a major Supreme Court ruling reining in the power of federal agencies. 

In its Loper Bright v. Raimondo decision last month, the high court overturned Chevron deference, a 40-year-old legal doctrine that required the courts to defer to an agency’s interpretation of a law if Congress had left an issue ambiguous. The decision shifts much of the responsibility to write and interpret laws to the legislative and judicial branches.