文章较旧,某些观点可能已经过时,请注意更新 1) 提交 I-140 后对非移民身份的影响 http://immigration.sina.com/sina-immigration/jzhang/1114197821/1114197821_1.html 2) 绿卡等待批准期间出入境问题 http://immigration.sina.com/sina-immigration/jzhang/1088729694/1088729694_1.html