- Original passport with visa stamped on its page
- Original I-94 card issued to you when you arrived at a US airport
- Original your employment letter which you accepted with your signatures
- Original approval of your H1B/L1 visa issued by the US Citizenship and Immigrant Service - Form I-797
US Social Security Administration
505 106th Ave NE # 301
Bellevue, WA 98004
(425) 450-3936
Bellevue, WA 98004