The Trump administration will be revoking the legal status of 532,000 immigrants from Cuba, Haiti, Nicaragua, and Venezuela, who were welcomed into the U.S. under a Biden-era sponsorship process designed to reduce illegal immigration.
They are being urged to self-deport or face arrest and removal by deportation agents by late April.
"Officials are urging migrants to use the newly repurposed CBP Home smartphone app to register for self-deportation."
https://www.cbsnews.com/news/u-s-to-revoke-legal-status-of-over-a-half-million-migrants-chnv/