See clip from Attorney Rajiv S. Khanna's conference call video that addresses this question.
https://youtu.be/H_VV9kV_lOg?t=688
FAQ Transcript:
This is a very tricky issue that has come up time and time again and one month we have one answer and after six months we have another answer. There are two sets of questions here, one is priority date, if the employer revokes I-140 does it get lost and the other one is some issues about Green Card through a future employer.
So let's discuss two sets of issues, as of November 12th, 2015 the answer is, USCIS will not take away your priority date if the old employer revokes the I-140. However, you will not have any right to extend your H-1 based upon I-140 that is already gone. In addition, if the I-140 is revoked for fraud, misrepresentation or mistakenly having been approved by USCIS, you will not have the priority date then.
USCIS has reversed itself like three or four times. They started of a few years ago saying you will lose your priority date, if the employer revokes the I-140, then the sudden No, you will not. Few months ago they said Yes you will lose the priority date and couple of weeks ago again they said No you will not. So they have gone up and down on this issue all the time.
Another question often asked by a community member who says there are cases were very accurately people reported that their priority date was lost between May 2015 and September 2015 and the answer is yes. I know that because I did lot of consultations in between and there were lot of cases that were denied. Now these cases should try to file a motion to reopen or reconsider and try to get their priority dates.
The other question he put forth was, can we get to see a copy of this teleconference document?
Unfortunately, there is no copy. It is comments from one of the committee members, we have all the volunteer committees as American Immigration Lawyers Association (AILA), where members go on behalf of AILA and meet the USCIS, in one of those there is a comment from American Immigration Lawyers Association committee member that says; the government has categorically stated in that meeting that they will not take away priority date.
The other question is: Does withdrawal of I-140 by an employer same as revocation by employer or withdrawal and revocation are two different things?
Withdrawal implies of something little different. Withdrawal implies that I-140 was not approved at least to my mind, even when it was pending it was withdrawn. Because once it is approved only can be revoked, I don't think it can be withdrawn. Something is not approved and its withdrawn then we are out of luck there is no priority date. Priority date only can be conferred by approved petition. Once it is approved then it is revoked by employer under the current thinking of the government that we all know, they will not revoke or take away your priority date.
I am little hesitant to say that you can depend upon the word of the government, because I have looked at the regulations and I have looked at the way these folks have been flip flopping on the situation makes me very nervous to be in the situation, prepare for the worst, hope for the best that's all I can tell you.
Question: Has USCIS listed their final official position on this issue as like a document anywhere on their website?
Not yet, I have not seen anything in writing from the government. So I won't be able to give you much there but as soon as I get something official from the government, I would be certain to post it.
Question: Now Green card through future employer, what if another employer starts my Green card processing, can I continue working for Employer A , while Employer B initiates new GC process for me?
And the answer is yes. You can have 20 new employers to start Green card process. As long as you have good faith, intention to join whichever comes first or whichever is more suitable for you. I don't see any reason that you cannot have multiple Green cards filed.
Question: Is it possible for me to clear the PERM and I-140 Stage of GC process of Employer B while still working for EMPLOYER A?
It is actually possible to process entire Green card with employer B, even though I-485 gets approved while you still working for employer A.
Question: I may or may not join EMPLOYER B. As I am in the process of looking for FTE (full time) position ) Say I moved to EMPLOYER C (FTE) and I have never worked with Employer B and have I-140 approved with EMPLOYER B .
There is actually Yates memorandum of May 2005 that talks about this. As long as you had good faith intention all the way to join, let’s say your I-140 was approved, PERM of course approved, I-140 was approved through employer B. You are working for employer A, I-140 approved through employer B, priority dates become current you still working for employer A, priority date becomes current after 180 days actually you do not ever have to join the sponsoring employer. You can join any employer who gives you same or similar job whether it is employer A, C, D or E.
There are some issues about coming back to employers after leaving them during the Green card process. I would want you to have one on one consultation with your lawyers, not an easy issue to discuss in a few minutes but it can be a problem if you leave an employer in the middle of the process and come back. Lot of people did not have any problems, one or two cases occasionally do get the problems. The government asks questions like why did you leave if this was the permanent job, if you left who was doing that permanent job, things like that could come up and there are whole set of issues that need to be discussed with your lawyers basically.
Question: I also heard about rejections in PERM. Can EMPLOYER B start two different GC process for me and file two PERMS at the same time?
No. Technically they can file two Green card process against two jobs, I would highly recommend against it. It can be for two different positions only, you can't file a PERM for the same employer, same employee, same job twice No.
Question: Does it cost anything for the Employer to hold an approved I-140?
It does not, except sometimes the government can question their ability to pay wages and they look at all outstanding Green cards and indirectly it can become an issue for the employers. It does not cost them anything out of ordinary. Let me rephrase it, nothing out of pocket but if the RFE comes and if any of the cases about ability to pay wages I guess at that point they can revoke the I-140 if they want.