Yes, but only under certain circumstances. Two joint sponsors can be used per family unit applying to immigrate under the same petition. If two joint sponsors are used, each joint sponsor is responsible only for the intending immigrant(s) listed on the joint sponsor's Form I-864.
If you have a joint sponsor, they must also complete Form I-864. If you are using the income of other household members to qualify, then each household member who is accepting legal responsibility for supporting your relative must complete a separate Form I-864A, Contract Between Sponsor and Household Member.
To upload additional financial documents or add a joint sponsor, you will start on the Affidavit of Support Tab. From this page you can add a new sponsor or a household member. When adding or updating financial documents, you have to first choose the sponsor whose documents you are uploading from the drop-down list.
If you have a joint sponsor, they must also complete Form I-864. If you are using the income of other household members to qualify, then each household member who is accepting legal responsibility for supporting your relative must complete a separate Form I-864A, Contract Between Sponsor and Household Member.
The sponsor does not have to prove the relationship to you (if you are the one being sponsored) but would have to give information of the spouse that was part of the joint filing including the US citizenship or legal residency. The marriage certificate would prove the relationship to the sponsor.
Click either “Add by name” or “Add by UID” (if a profile has already been created for an individual applicant) and add the applicants one by one, then click “Save”. Once you hit “Save”, that individual applicant will be added to the group appointment.
On the case summary page's status chart, there are two buttons under “Applicant Information.” To add or remove a family member from your case, click on the appropriate button. You will have to enter information about your family member, including name, address, email, and relationship to you.
Proper documentation, such as most recent federal tax returns, birth certificates, and proof of residence must be submitted to USCIS to prove the relationship and shared residence.
Joint sponsor needs to provide the following documents: Proof of US citizenship or permanent resident status. Federal tax return or IRS tax transcript for the most recent year. All W-2 and/or 1099 form(s) for the most recent year.
A valid Emirates ID for the sponsor. Attested marriage certificate (translated to Arabic). Attested birth certificates for children. Medical clearance certificates for dependents over 18 years old. Tenancy contract (Ejari) to prove accommodation.