This agency was formerly called the Immigration and Naturalization Service.
Their website is located at https://uscis.gov/

Filename	Size
M-274 Employer Manual (for preparing the I-9 form)	1.87 Mbytes
I-9 Form	67 Kbytes
Immigration and Nationality Act	NA
Laws	NA
USCIS Federal Register Announcements	NA
USCIS Policy Manual	NA