SAO PAULO: Brazil will begin imposing restrictions on the entry of some foreign citizens from Asia seeking refuge in the South American nation as a means to migrate to the United States and Canada, the justice ministry’s press office said Wednesday. The move, which will start on Monday, will affect Asian migrants who require visas to remain in Brazil. A Federal Police investigation has shown these migrants often buy flights with layovers in Sao Paulo’s international airport en route to other destinations, but stay in Brazil as means to begin their journey north, according to official documents provided to The Associated Press. More than 70 percent of requests for refuge at the airport come from people with either Indian, Nepalese or Vietnamese nationalities, one of the documents says. Starting next week, travelers without visas will either have to continue their air journey or return to their country of origin, the ministry’s press office said.