anunnaki

Thank you, NLR! Upvote for Colorado! I grew up in Aurora, my bro lives in Ft. Collins, and my sis lives in Lakewood. Alas, I won't be moving to CO though since my parents no longer live there.

I-864. He should provide his latest (or last 3 years) ENTIRE tax return (including all schedules and w2) or tax return transcript (shorter and preferred,) proof of current ongoing income, and proof of citizenship or LPR status.

no they wouldn't be unless he's a dependent on their tax return.

hi
no, and yes for the second
no because you will leave Korea and not continue with the income or job that you have
yes, the joint sponsor can live wherever in the US, as long as the person is a US Citizen or Legal Permanent Resident and qualifies

Just the immigrant, your wife.