The Trump administration began sending termination notices Thursday to about 500,000 foreign nationals who had received temporary stays to live and work in the United States under a special humanitarian exception.

The so-called CHNV program was open to applicants from Cuba, Haiti, Nicaragua and Venezuela from 2023 until it was terminated by President Donald Trump earlier this year.

Recipients of the notices from the Department of Homeland Security are encouraged to “self-deport immediately.”

The move came two weeks after the Supreme Court ruled that DHS can order CHNV participants to leave the country, even as they pursue a lawsuit challenging Trump’s revocation of the Biden administration-era program.

If immigrants agree to “self-deport” using DHS’s Home Mobile App, they will receive travel assistance and a $1,000 bonus upon arrival in their home country.