I visited Canada from Brazil. My Ex signed off for a year so my son could come with me. Now I have married a Canadian here and applied for Permanent Resident status but he will not sign form IMM 5604 and agree to my son living here unless we agree he can pay less child support. My husband is rich so he got the idea he doesn't need to pay as much now. My Ex doesn't even live in Brazil. What can I do about this? Do I need to go back to Brazil and get full custody? Or can I get custody in Canada, even if I am not yet landed. All very complicated. According to the paperwork I need to go back to Brazil soon or I would have abducted our son.