National Customer Service Center (NCSC): 1-800-375-5283
1-800-767-1833 (TDD for the hearing impaired)
The USCIS National Customer Service Center is expanding its hours to include
Saturdays from 9 a.m. to 5 p.m. Live agents will now be available Monday –
Friday, 8 a.m. – 8 p.m. and Saturdays from 9 a.m. to 5 p.m in each time
zone.