This is some unfair questioning, imo.
First of all, she IS part of the US government, but she doesn't speak for it, in terms of policy or support/non-support for certain groups. Her personal views should not be given in a forum such as this, in front of Congress.
Second, you don't have to know who would lead a state in order to advocate for its creation. That's just ridiculous.
Third, the woman seems plenty intelligent and articulate enough to me. She could have explained her position better, but anyone with a brain can understand why she wouldn't answer those questions.
Fourth, Mast comes off as a dick. I don't care what Party he's in.
There are plenty of other examples of diversity hire mistakes - this lady isn't one of them, imo.