相关网站?
-See:
http://www.uscis.gov/portal/site/uscis/menuitem.749cabd81f5ffc8fba713d10526e0aa0/?vgnextoid=93d4ad2fe6a2a210VgnVCM100000b92ca60aRCRD&vgnextchannel=8e5ca7682e319210VgnVCM10000025e6a00aRCRD
http://www.uscis.gov/portal/site/uscis/menuitem.5af9bb95919f35e66f614176543f6d1a/?vgnextoid=480ccac09aa5d010VgnVCM10000048f3d6a1RCRD&vgnextchannel=db029c7755cb9010VgnVCM10000045f3d6a1RCRD
入籍试题?
http://www.uscis.gov/portal/site/uscis/menuitem.749cabd81f5ffc8fba713d10526e0aa0/?vgnextoid=5efcebb7d4ff8210VgnVCM10000025e6a00aRCRD&vgnextchannel=5efcebb7d4ff8210VgnVCM10000025e6a00aRCRD
http://www.uscis.gov/portal/site/uscis/menuitem.d72b75bdf98917853423754f526e0aa0/?vgnextoid=afd6618bfe12f210VgnVCM100000082ca60aRCRD&vgnextchannel=afd6618bfe12f210VgnVCM100000082ca60aRCRD
还有,去哪些国家,美国公民无需签证?
多谢!