Canada made it easier for Nazis to immigrate than for Jewish refugees after WWII due to their anti-communist policies. Since then, the government has largely refused to release information about their immigration policies surrounding former Nazis as well as the list of immigrants found to be former Nazi party members.

The controversy surrounding parliament giving a standing ovation to a former Waffen SS member for his service "fighting the Russians" brought much of this to mainstream discourse. Who was fighting the Russians during WWII? The Nazis. If a country invited a bunch of Nazis to their nation, has a long history of antisemitism that contributed to deaths in the Holocaust, and are still celebrating and protecting Nazi war criminals...I think its fair to call them a Nazi cesspool. If they don't want to be characterized this way, they should probably take actions to prove they aren't, such as releasing the names of the known war criminals and extradite them for trial.

You can find plenty of news articles on these topics from a couple years ago.