who has the power to admit new states into the union
Admission to the Union The Admission to the Union Clause of the United States Constitution, oftentimes called the New States Clause, and found at Article IV, Section 3, Clause 1, authorizes the Congress to admit new states into the United States beyond the thirteen already in existence at the time the Constitution went into effect.
State of the Union For many years, the speech was referred to as "the President's Annual Message to Congress".[10] The actual term "State of the Union" first emerged in 1934 when Franklin D. Roosevelt used the phrase, becoming its generally accepted name since 1947.[10]