If my spouse has a different country of birth, can this help me?

If you are married, your spouse’s country of birth may also be used to determine visa chargeability. For example, if you were born in China, but your spouse was born in Australia and there is a quota backlog for China but no quota backlog for Australia in your preference category, you and your spouse may move forward with your I-485 application or immigrant visa application based on your spouse’s country of birth.