CNN  —  The Trump administration is preparing to revoke legal status for many migrants who entered the United States under a Biden-era program, according to a source familiar with the planning, expanding the pool of people who could be deported. The move is expected to affect migrants from Nicaragua, Cuba, Venezuela, and Haiti who arrived during President Joe Biden’s term under a humanitarian parole program and were allowed to temporarily live and work in the US. More than 530,000 Cubans,