This is an overt support of someone that is highly controversial. The aftermath of the Iraq war isn't going way because the US isn't involved as much anymore. There is already a sense that accountability hasn't really been high with the Iraq war. Oops, we made a mistake doesn't cut it too much. With this appointment, it further amplifies the sentiment that there is absolutely no real accountability. I would say this is why a lot of people would feel strongly about this.