US department of justice immigration and naturalizaiton service美国移民局Permanent Resident Card绿卡The person identified by this card is authorized to work and reside in the US这张卡拥有人可以在美国居住和工作Void if altered， may be revoked by ins改变无效，可被移民官收回我相信你要问的是第三句吧，那是说“这张卡拥有人可以在美国居住和工作”