The Supreme Court is established by Article III, Section 1 of the Constitution of the United States, which says: "The judicial Power of the United States, shall be vested in one supreme Court .

The size of the Court is not specified; the Constitution leaves it to Congress to set the number of justices.

were decided, the Court comprised these seven justices: Gibbons v. Ogden, 22 U.S. (9 Wheat.)

1 (1824), is a landmark decision in which the Supreme Court held that the power to regulate interstate commerce granted to Congress by the Commerce Clause of the United States Constitution encompassed the power to regulate navigation.

In United States v. Perez, 22 U.S. (9 Wheat) 579 (1824) the Supreme Court held that when a criminal trial results in a hung jury, the Double Jeopardy Clause of the Fifth Amendment does not bar a retrial.