I (F, Greencard holder) want to start applying for my husband's (M, Visa B2) Greencard process.
We are aware that we should start with i-130. However, for now I don't have enough means to become the only sponsor to him. Hence, my husband's stepfather (former Navy, American citizen) is willing to become a joint sponsor.
Do we submit everything at once? Or only when requested? I am a bit confused.