DHS-USCIS (Main Website): https://www.uscis.gov/
DHS-USCIS Contact Center: If you are in the United States or a U.S. territory, dial 1-800-375-5283 (for people who are deaf, hard of hearing, or have a speech disability: TTY 1-800-767-1833) to access automated information through an interactive menu 24 hours a day, seven days a week. If you are outside the United States or a U.S. territory, you can call +1-212-620-3418. You can get live help from a USCIS representative Monday through Friday from 8 a.m. to 8 p.m. Eastern Standard Time except on federal holidays.
Contact Information: https://www.uscis.gov/about-us/contact-us
Fax Number: (8620) 3814 5883
Beijing CIS Office
Contact DHS-Customs and Border Protection (CBP)
Please direct U.S. entry and admission questions to U.S. Customs and Border Protection (CBP) at https://help.cbp.gov.
Contact DHS-Immigration and Customs Enforcement (ICE)
Report Crimes, Suspicious Activity and Suspected Child Exploitation of Missing Children