In the US, there are two basic ways in which the government exercises power over its citizens. The first is through the legislative process, which is the basic high school civics method. Elective representatives in the legislature vote on a bill and the president signs or vetoes it. This is primarily how laws are meant to be made in a representative democracy. Then there is the administrative process of rulemaking and guidance, which is run primarily by unelected bureaucrats that provide a level of technocratic expertise. Such agencies include organizations like the Environmental Protection Agency, the Department of Education, the Department of Motor Vehicles, and so on. These agencies exist to make rules on the margins to make sure that laws passed by Congress, which is comprised of democratically accountable representatives, accomplish their intended purpose.