U.S. immigration attorneys report a surge in visa revocations for old DUI offenses, some dating back over a decade. Individuals who previously disclosed these cases and were granted visas are now losing them without new charges or disclosures. H-1B, H-4, and F-1 visas are reportedly affected, causing uncertainty for foreign workers and students regarding travel and visa security. The reasons behind this renewed action on past cases remain unclear, as authorities have not issued public statements.