Regulations and laws
Abstract People usually do not make any difference between laws and regulations but there is certain difference in hierarchy between laws and regulations. In the United States, e.g., Congress, and only Congress, creates laws. Federal executive departments and administrative agencies write regulations to implement the authority of laws. Regulations (as well as Executive Orders and Proclamations) are ancillary or subordinate to laws but both laws and regulations are enforceable. The US Code is the official compilation of current, codified laws by subject; the US Statutes-at-Large is the official chronological compilation of all laws; and the Code of Federal Regulations is the official compilation of regulations.