USCIS announced this week that it will be limiting the hours of
operation of its toll-free customer support number, 800-375-5283.
Effective now, USCIS will no longer offer Saturday hours of operation.
Starting April 1, the National Customer Service Center will be open
Monday – Friday, from 8 am to 6 pm in all four time zones of the
contiguous United States.
While Saturday customer service hours are no longer available via the
1-800 number, customers can still check the status of their cases,
change their addresses and submit e-requests 24 hours a day at
uscis.gov.