All these agencies are the result of elected representatives being derelict in their duties by setting up these agencies to do the work for which they were elected. Politicians in DC are more interested in their social life than doing actual people work. I’ve been there and fought the battles at the local level in the same kind of environment.
Certainly true wrt the "regulations" to be "determined by the Secretary/Director/etc. It's a complete Dereliction of Duty on the part of Congress to not include all of the regulations in the Legislation they pass. Delegate nothing (We have 535 CongressCritters to get some work done for (as opposed to to) the People.