Of the five competing countries—Australia, New Zealand, the United States and the United Kingdom—Canada is the only one that welcomes grandparents.
As for parents, I am not completely familiar with the current situation in Australia. I know that there are two streams of sponsorship for parents and grandparents, that the conditions relating to maximums are very strict and that there are also waiting lists. In one stream, the application processing time frame is several years, and in the other processing stream, sponsors pay a type of guarantee at the start of the process related to the costs of settling parents or seniors in Australia. There are a larger number of people there who are willing to pay these fees, which lengthens the waiting list.