This is a really, really stupid remark by a guy who's not usually that dumb.
What should be taught at a University, Senator Gregg, is what is true and good.
What is true and good has nothing to do with "the sensibility of most Americans", except insofar as they have been raised in a culture that exalts the truth and goodness.
The reason this fool should be dismissed is because he is teaching lies, not because people agree with him, or don't.
"What should be taught at a University, Senator Gregg, is what is true and good.
Well, anyone can claim what he believes is good and true, and most people do make this claim with regard to their beliefs.
So who is to be the arbiter?