I found this info in this site
Description:
Form I-864A may be filed by a sponsor and a non-U.S. citizen immigrant. Form I-864A is an optional form and sets forward a contract in which the immigrant agrees to make assets and/or income available to the sponsor to help support the immigrant for which the affidavit of support has been filed. Form I-864A sets forward obligations of the household member in this contract which will terminate when the obligation under the Affidavit of Support of the sponsor terminates. A separate Form I-864A must be used for each household member whose income and/or assets are being used by a sponsor to qualify. Form I-864A may be submitted simultaneously with Form I-864. Form I-864A (Affidavit of Support Contract Between Sponsor and Household Member) may also be known as USCIS Form I-864A, I 864A, Form I864A or immigration form I-864A.
Does anyone know can I as the sponsor who is about $3000.00 short have my husbanh/non us citizen, whom I am sponsoring, aid in my income or do we have to get a co-sponsor.......I am soooooo very confused!!!!!!!