PLEASE GIVE ME SUGGESTIONS: My parents PR application is in process now. They are in medical stage and my dad diagnosed with active TB and currently on TB medication. Along with that he has diabetes, hypertension and ischemic heart disease. He probably will be asked for cardiologist visit soon. Also my mom recently got heart attack. I am just thinking for some reasons if they become medically inadmissible now, will they be able to apply for supervisa or visitor visa in future? I am just wondering, if I withdraw their application now before they become medically inadmissible, are there any chances for them to apply for visitor visa in future?