This is a scammer. His name is Max and he poses as a USCIS official and tries to collect credit card info. for phony payment to file immigration related paperwork. My husband got the call after filling out PDF form on the official uscis.gov website. Was able to block credit card and abort the transaction.
Called saying i had to renew my green card, then a second call said call me by a different name, scam, they dont work for the uscis, i stopped all paperwork when i read their disclaimer, but they still call as i put in my number in before i read the disclaimer.