Mi mother received a call from this number.  The caller was very aggressively asking for personal info..  When I called back, so see what they were up to, he identified himself as Antonio Mendez and said that he worked for USCIS.  I called him with my number blocked and he never answered the way someone from USCIS should answer.  These agues are up to no good.  Report the number to the police in Campbell, CA
(408) 866-2121