The United States is expanding a border control program that pairs migrant expulsions with a limited number of pre-approved entries per month, according to reports.

Under the program, the United States would take in up to 30,000 Cubans, Nicaraguans, Haitians and Venezuelans each month, while ramping up efforts to detain and expel migrants who show up at the border unauthorized.

The program will also couple a surge in border enforcement, an online reservation system to apply to enter the country at ports of entry, an expansion in the refugee system and a crackdown on smuggling networks.

Certain elements of the plan were first reported by Reuters.

President Biden is scheduled to address migration later Thursday, ahead of a trip to Mexico City and El Paso, Texas.