Hello , I working on H1-B visa for almost 10years (Indian backlog) and my parents have visited US as tourist multiple times on valid B-2 visa. They have been stuck in Canada since Dec 2019 ; rather than traveling back to India I wish to bring them to US but I am not sure what’s the current status for crossing border. I get different interpretation after reading sites. Can they cross border (Canada to US) through air ? Parents : Indian citizen and valid B-2 visa, stuck in Canada at relative place Me : Indian citizen on H1-B Please help !!