✔ 最佳答案
1. You will have to file I-130 with USCIS.
In theory, there is nothing you need to or can do in Hong Kong.
2. No.
3. I-130.
4. If you feel comfortable, the process is quite easy (but time-consuming).
Keep in mind:
a. Spouse of LPR (Lawful Permanent Resident) is subject to annual quota control. Currently, it has a 2-year waiting period.
b. Since you are a LPR, your spouse's eligibility depends on if you can maintain your status. So it is important that you have to comply with your requirement as a LPR (like not leaving the U.S. for more than 6 months without a re-entry permit). Also you must prepare to show your tier to the U.S. if you will not be present in the U.S.