"Despite additional dog training, leashing, working with veterinarians, and consulting with animal behaviourists, the White House environment simply proved too much for Commander," a statement said.
Welp. I can kinda imagine how that could happen. Just a lot of chaos and people running around and no space to get settled for a dog, maybe some unpleasant interactions, and maybe just not a dog temperament suited for this.
There is a very interesting documentary called "Professor Marston and the Wonder Women" and how they created her in 1940 as a feminist super hero.