If a referendum in Puerto Rico passes in favor of statehood, what must happen next according to the Constitution?

The process for granting statehood to a territory in the United States, such as Puerto Rico, requires action by Congress following the approval of a referendum in favor of statehood. According to Article IV, Section 3 of the U.S. Constitution, Congress has the authority to admit new states into the Union. Therefore, after a successful referendum demonstrating the desire of the Puerto Rican people for statehood, the next step involves Congress considering a statehood bill, deliberating on it, and ultimately passing it to formally admit Puerto Rico as a state. This establishes the legislative path necessary for transitioning from a territory to a state, emphasizing the role that Congress plays in this significant constitutional process.