Fake degrees: Exposing Canadians with phoney credentials (Marketplace) -- CBC, 2017, 22:26 -- https://www.youtube.com/watch?v=IHTg5zzFEKE
There is a claim made in here that half of new PhDs in the US are from fake instituions where one can purchase a degree without having to complete any work. Though I wish they investigated the process of getting one of these degrees a bit more thoroughly, this video does a good job highlighting the scope of this deceptive practice.