Under the program, the U.S. accepts up to 30,000 people a month from the four countries for two years and offers eligibility for work authorization. To qualify, migrants must have a financial sponsor in the U.S. who vouches for them and fly into an American airport at their own expense, rather than crossing at the southern border.

In 2023, the Biden administration let in about 327,000 people from Cuba, Haiti, Nicaragua and Venezuela through a parole program. People granted parole do not receive free flights to the U.S. They buy their own plane tickets. An app available to people in the parole program lets them check on their cases and get travel authorization.