the only type of court(s) required by the constitution is/are
Article Three of the United States Constitution The Supreme Court is the only federal court that is explicitly mandated by the Constitution. During the Constitutional Convention, a proposal was made for the Supreme Court to be the only federal court, having both original jurisdiction and appellate jurisdiction. This proposal was rejected in favor of the provision that exists today. Under this provision, the Congress may create inferior (i.e., lower) courts under both Article III, Section 1, and Article I, Section 8. The Article III courts, which are also known as "constitutional courts", were first created by the Judiciary Act of 1789. Article I courts, which are also known as "legislative courts", consist of regulatory agencies, such as the United States Tax Court. Article III courts are the only ones with judicial power, and so decisions of regulatory agencies remain subject to review by Article III courts. However, cases not requiring "judicial determination" may come before Article I courts. In the case of [[Murray's Lessee v. Hoboken Land & Improvement Co.[2]]] 59 U.S. 272 (1855), the Supreme Court ruled that cases involving "a suit at the common law, or in equity, or admiralty" inherently involve judicial determination and must come before Article III courts. Other cases, such as bankruptcy cases, have been held not to involve judicial determination, and may therefore go before Article I courts. Similarly, several courts in the District of Columbia, which is under the exclusive jurisdiction of the Congress, are Article I courts rather than Article III courts. This article was expressly extended to the United States District Court for the District of Puerto Rico by the U.S. Congress through Federal Law 89-571, 80 Stat. 764, signed by President Lyndon B. Johnson in 1966. This transformed the article IV United States territorial court in Puerto Rico, created in 1900, to an Article III federal judicial district court.
Law of the United States Unlike the situation with the states, there is no plenary reception statute at the federal level that continued the common law and thereby granted federal courts the power to formulate legal precedent like their English predecessors. Federal courts are solely creatures of the federal Constitution and the federal Judiciary Acts.[41] However, it is universally accepted that the Founding Fathers of the United States, by vesting "judicial power" into the Supreme Court and the inferior federal courts in Article Three of the United States Constitution, thereby vested in them the implied judicial power of common law courts to formulate persuasive precedent; this power was widely accepted, understood, and recognized by the Founding Fathers at the time the Constitution was ratified.[42] Several legal scholars have argued that the federal judicial power to decide "cases or controversies" necessarily includes the power to decide the precedential effect of those cases and controversies.[43]