Congress is called out in the constitution to pass laws, not create entities run by unelected people to pass laws. The regulatory agencies (as opposed to nonregulatory agencies) really seem a step too far. "Administrative law" should not be a subject required. "sources of law" should not include administrative entities.

If congress is doing the wrong thing creating these entities (and many believe they are), the idea of checks and balances is for someone else to stop them, not themselves. The checks on congress are the president and the courts.