1. If NIW I485 is rejected. Can we refile I485, or need to start a new NIW case from I-140 stage?
2. NIW I485 is rejected. If I refile the new NIW and it is approved, can the previous NIW's priority date be used for this new NIW's AOS?
3. How will the Trump administration affect NIW I485 cases? Would you suggest any precautions?
4. Can petitioner file multiple NIWs simultaneously with different endeavors?
If your NIW I-485 is rejected but your I-140 is still pending or approved, you can refile the I-485 without starting a new NIW case. However, consult your lawyer for any case-specific nuances.
If you file a new NIW and it gets approved, you can use the priority date from a previous NIW only if the prior I-140 was approved.
As for multiple NIW filings for different endeavors, it is theoretically possible but may weaken your case by making it appear unfocused.