Dotted lines indicate that, e.g., rulemaking, inter partes disputes or intramural appeals may not be involved. As explained elsewhere, however, direct court review is not possible without exhausting intramural appeals. In this context, enforcement and review usually occurs in private litigation. All administrative agencies are created by legislation. Legislation is the source of all agency power.
Legislation is also generally governs administrative processes and procedures.
The power to appoint or remove agency personnel generally resides in the executive branch. However, legislatures exercise control subject to only a few restrictions such as executive veto and may alter an agency's powers or even abolish it. This topic is a major part of the Administrative Process courses. In the context of this discussion, it must suffice to indicate that agencies generally have inherent power to make rules and are often given explicit power to do so. Courts review the process by which rules are promulgated as well as the substantive content of rules.