"This new process is orderly, it's safe and it's humane," Biden said. He said his message to those would-be migrants from Cuba, Nicaragua or Haiti without a U.S. sponsor is: "Do not just show up at the border."

Biden used his speech to press Republicans to stop blocking his immigration reform proposals and border measures and for Congress to provide the necessary resources.

The Democratic president will visit El Paso, Texas, on Sunday, his first trip to the southwestern border with Mexico since taking office.