My mother filed I-130 for my brother who lived overseas. she is a US citizen and has no income and on medcaid, I want to become the joint sponsor for him since I am working and I am single. I don't live with her at same address. (1) Am I still be able to sponsor my brother without being at same physical address as my mother? (2) if yes, should he be considered as member of my household not my mom's ( are we 2 for 125% poverty line or 3 including my mom) ? (3) how my checking account counts toward my eligibility? ( i have 30K for recent year income, 17K for 2nd recent and 5.5K for 3rd recent and 10K in my account).