The judicial Power of the United States, shall be vested in one supreme Court, and in such inferior Courts as the Congress may from time to time ordain and establish. (politics.stackexchange.com)
It consists of one Supreme Court and of such inferior courts as Congress shall from time to time ordain and establish. (supreme.justia.com)
Article III of the Constitution says this: «The judicial Power of the United States, shall be vested in one supreme Court, and in such inferior Courts as the Congress may from time to time ordain and establish.» (thepoptort.com)