The United States is run under a federal system. This means that there are two forms of government, federal and state, in which citizens or people are regulated. That said, the federal and state governments are both structured similarly; there are three branches of government in each system where one branch cannot have complete control, also known as a system of checks and balances. Just as the federal government has a constitution, each state also has its own constitution and the ability to make laws that affect citizens or people within that state's borders. When a conflict of jurisdiction arises between federal law and state law, the Supremacy Clause takes effect. Under the United States Constitution, the federal government has the ability to legislate express powers. Express powers are powers given to Congress by the U.S. Constitution that allow it to regulate federal matters such as the coinage of money, the post office, or the military. They also have the power to make laws linked to an expressed power, known as implied powers. This means that Congress can pass laws only with the power given to it by the United States Constitution, and its laws are the supreme law of the land. For example, recreational marijuana is legal in Colorado, however, under federal law, consuming or possessing marijuana is illegal. If a person is caught with less than an ounce of marijuana on them and is over the age of twenty-one, the state will not charge the person with possession of a controlled substance. Now, if the person is apprehended by a federal agency, even if they are within the Colorado state line, the federal government has the right to obtain a warrant and arrest the person for possession of a controlled substance. The federal court has this right because federal laws prevail over state and local laws