本人是以J-1访问学者身份来美（在美国大学里，美国这边不给钱所以没有雇佣关系）后申请了EB1A ，I-140已经得到批准。预计近期就可以拿到J豁免。 我的问题是：
- 在已批准的I-140（EB1A）基础上， 可否在没有工作（没有雇主证明信）的情况下就直接递交I-485调整身份?
-Technically, yes. You need to provide your employment plan/statement for I-485 filing in this case, but you had better have a job or job offer because some IO may ask you to provide employment letter later.
- 在此情况是否必须提供经济实力证明以表明不会成为社会负担? 除了美国这里银行账户的流水账, 可否提供国内的银行资金证
-Not need such proof documents.
- 如果必需有雇主证明信 (Employment Verification Letter), 那就只能等拿到J豁免后先找份工作将身份从J-1转成H-1后再提交I-485了?
-Not need H-1 status. If you get the J-1 waiver, then you can file I-485 no matter what status you have (even if J-1). Of course, if you have a job or keep your current job with J-1 status, then that will be very helpful. Your J-12 waiver does not affect your current J-1 status, but you can not extend your J-1 status after getting J-1 waiver.
- 如果是这种情况, 那么是否最好找 I-140 Part 6 Basic Information about the proposed employment中填写的那个雇主(也就是我目前所在的大学)?
-Fine if you still work there when you file I-485 after getting J-1 waiver.
还是只要是同意研究领域的研究职位即可?
-Yes if you leave your current employer.
