Very confused. If you aren’t able to travel by June 2021, you will need to apply for the PRTD based on H&C from your home country not Canada. As others have explained not having health coverage that covers a very serious disease is likely to be a concern. Your reason for not being able to return to Canada is that your father’s health is so severe he needed heal that required both you and your sister to live with/close to him but that also translates to concerns that he could need to access expensive medical care in Canada. If your father has significant savings then that may allow him to visit because he won’t be able to get insurance that covers his ALS. The other issue that CBSA will want to see when deciding whether you4 FIL can enter Canada is his plans to return home. The airline will also want to see a return ticket home when allowing a visitor to fly to Canada. ALS patients will certainly be considered medically inadmissible.
