First Way
Second Way
Two Conditions Placed on the Amendment Process
Amendments proposed by Congress but never ratified by the States:
Source: Law Justia
Before the Constitution became the Supreme Law of the United States, it had to be ratified by State Conventions of at least nine of the thirteen States.
The proposed Constitution was completed and sent to the States on September 17,1787. It was ratified by nine of the thirteen States on July 26, 1788. This is the date when the Constitution went into effect and became law in those nine States. All thirteen States ratified the Constitution May 29, 1790.
Source: The National Constitution Center