I want to invite my sister to visit me in US from China. She has a son coming with her. Her hu*****and will not come this time. She has good job in China. Because my parents are living in Canada, so she wants to go to visit them too. So she needs both US and Canadian Visa. Does anyone have similar experience? Can she get Canadian visa after she come to US? Or she has to get both Visa in China? DOes she need multiple entry visa to reentry US after visiting Canada?
Thank you very much for your help.