Congress must pass what law after a state constitution has been approved by the people or that state in order for a state to be added
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http://www.sos.state.mn.us/home/index.asp?page=648
To add a new state to the United States, Congress must pass an act called an "Enabling Act" after a state constitution has been approved by the people or that state. Here's how it works:
1. State Constitution Approval: First, the people of the prospective state draft a constitution that outlines the structure and principles of the state government. This constitution is then submitted to the residents of the state for approval through a special election or referendum.
2. Approval of State Constitution: If a majority of the residents vote to approve the proposed state constitution, it demonstrates their desire to become a state of the United States.
3. Enabling Act by Congress: After the state constitution's approval, the Congress needs to pass an Enabling Act. The Enabling Act is a law that authorizes the prospective state to hold a constitutional convention and proceed with the process of forming a state government.
4. Constitutional Convention: Once the Enabling Act is passed by Congress, the prospective state can hold a constitutional convention. During this convention, representatives from the state draft a constitution that adheres to the principles of the United States Constitution while also addressing specific issues and needs of the state.
5. Statehood Admission Act: Once the constitutional convention is complete, the proposed state constitution is submitted to Congress for review. If Congress approves the constitution, they can pass a Statehood Admission Act, which formally grants statehood to the prospective state.
6. Presidential Approval: After the Statehood Admission Act is passed, it is sent to the President of the United States for approval. If the President signs the act, the prospective state officially becomes a new state in the United States.
It's important to note that the process of adding a state to the United States can vary, and Congress has the final authority to determine the requirements and procedures for the admission of new states.