How can investors use interchargeability at the I-526 stage?

You just need to clearly note the cross-chargeability when I-526 is approved and you are filing for the adjustment of status or immigrant visa processing. Nothing to do at the I-526 stage, however.

There is no need to change the country of chargeability. Spouses can choose the best option at any time. As soon as the petition is approved, you can file to adjust or notify the government the petition is current.

Although investors can use interchargeability particularly when filing I-526 but, it must be taken care of when filing I-526. Otherwise, the petition may have to be withdrawn and refiled. This may not be feasible in your case with changes in the investment amounts.

As long as you were listed as the spouse on the I-526 with your country of birth, then USCIS and/or DOS will know of your country of birth and eligibility for cross-chargeability. You can also assert this after the I-526 approval. Check your copy of the I-526 and if this was missing interfile the information and request for cross-chargeability.

It does not matter at the I-526 stage. And principal applicant cannot be changed. Once your case is at the national visa center, you can charge to your country of birth.

The country of chargeability is relevant at the I-485 or consular stage once the I-526 is approved. The I-526 is adjudicated uniformly regardless of the country of birth of the applicant.

You are listed on the I-526, and many times applicants will note the cross-chargeability on their I-526 petition or I-485 applications, but the officers should keep an eye out for that too.