Similarly, my boyfriend and I are wondering best place to apply - he is an Uzbek citizen on a student visa in South Korea; we met in school, but I'm back in the US now. He will graduate in January 2023 and apply for Korean D10 visa - "looking for work" visa - and hopefully find work there while we apply for US K1. Can we apply for his K1 through the SK/US consulate, and interview there? How do we document/verify his SK visa status change over time, in a way that doesn't negatively impact our US K1 application?