If you ever want to see how the wheels of our federal bureaucracy works, you simply need to read the Federal Register. This daily publication of thousands of pages encompasses proposed new laws, enacted new laws and rules issued by government agencies. In August, the Department of Energy (DOE), published a proposed rulemaking that would change the definition of a showerhead.
While this sounds simple enough, you have to remember this is the federal government. If the model plumbing codes wanted to change the definition of a showerhead, it would take up one page in a code change monograph. If the ASME standard wanted to change the definition of showerhead, it might extend to two pages for the proposal. The Federal Register only took 28 pages, reduced to 8-1/2 by 11, to propose a change to the definition of a showerhead. You can read the DOE proposal at: https://bit.ly/2FpucD5.