亲戚在国内是外科医生，做手术特别好，在国外会议上也发表过一些文章。为了留美的子女想用EB-1申请移民（听说子女21岁以下可以带着申）。本人业务能力好，但来美国估计没法再当医生（50多岁英语一般），那么被批准的可能性有多大？
-Depends on his qualifications such as publications, awards, national and international reputations in his specialty. So, he had better consult an immigration lawyer to make evalution before he applies for EB-1A or NIW (EB-2). Some lawyers may make the evalution for free.
If he can find a job in US, e.g., a job in a non-profit institute or in a university, then he can apply for H-1 visa to come to US to work. Then, he can apply for the green card sponsored by his employer and thus, he has more chance to get the green card.
大概多长时间等候？
-Hard to say, case by case. Normally, EB-1A may take about 3 to 4 years and NIW may take 5 to 6 years.
如果说做研究，需要某机构的 full time 雇佣承诺吗？
-If he applies for EB-1A or NIW, he does not have to have a job offer.
是不是一旦递交申请就不能以 B1或B2 入境了？
-Because it takes a longer time for him to be qualified for the immigration, it may be OK for him to travel to US with B1/B2 visa.
谢谢！
