RNC Member- "Blacks are Different"

The Republican National Committee moved to censure RNC Committeeman from Michigan Dave Agema. Agema is a former State Representative. Here is all you need to know about him:

Priebus and other officials, including several in Michigan, had first called for Agema's resignation a year ago leading into the 2014 winter meetings after he had criticized gays in a speech in Berrien County, re-posted a defense of a Russian anti-gay law on Facebook and also re-posted a third party screed questioning whether Muslims had done anything to improve American culture.

Agema decided to stay away from the meetings last year and it was hoped he would stop making the controversial posts or fade into the background. But on New Year's Eve, he posted a third-party article on Facebook that said blacks were different from -- and posed a threat to -- other races and that African Americans didn't have the same communication and reasoning skills of other races.

I have two basic questions on this:

1. Who appointed him? Why? People don't become bigots over night.
2. Why not just remove him?