By Camilo Montoya-GalvezThe Biden administration is allowing thousands of Ukrainian refugees who were processed along the southern border after Russia's invasion of Ukraine to remain and work in the U. More recently, as part of an effort to deter illegal border crossings, the administration has granted parole to thousands of migrants from Cuba, Haiti, Nicaragua and Venezuela with U.  Unlike other immigration benefits, there's no straightforward way for immigrants paroled at airports to request an extension of their legal permission to stay in the U