Admission to the Union

The Admission to the Union Clause of the United States Constitution, also called the New States Clause, found at Article IV, Section 3, Clause 1, authorizes the U.S. Congress to admit new states into the Union (beyond the thirteen already in existence at the time the Constitution went into effect). The Constitution went into effect on June 21, 1788 in the nine states that had ratified it, and the federal government began operations under it on March 4, 1789 (by which time it was in effect in 11 of the 13 states). Since then, 37 states have been admitted into the Union. Each new state has been admitted on an equal footing with those already in existence.

Admission to the Union

The Admission to the Union Clause of the United States Constitution, also called the New States Clause, found at Article IV, Section 3, Clause 1, authorizes the U.S. Congress to admit new states into the Union (beyond the thirteen already in existence at the time the Constitution went into effect). The Constitution went into effect on June 21, 1788 in the nine states that had ratified it, and the federal government began operations under it on March 4, 1789 (by which time it was in effect in 11 of the 13 states). Since then, 37 states have been admitted into the Union. Each new state has been admitted on an equal footing with those already in existence.