My sister situation is a little bit complicated with the fiance's financial situation. He self-employed but due to the economy, his tax showed negative number under AGI. BUt he's fully employed now by the local company and have earned the w2 that meets the poverty guideline. Can he use joint sponsor? I am currently a lawful permanent resident (2 years conditional GC), will renew in July to 10 years. Can I be the joint sponsor?