Why does Senator Cornyn hate the United States Constitution?

The MoveOn.org ad in the New York Times is not hate speech, nor does it advocate the overthrow of the U.S. government. The ad is pure, unadulterated, Constitutionally-protected, patriotic, freedom of speech.

A United States senator should be proud and applaud those who cherish and take advantage of the freedoms that American's have (and still are) fought and died for. Why, instead, do Cornyn and the other Constitution-haters, try to shame, stifle, and generally have disgust for those freedom's as evidenced by the introduction of a resolution about MoveOn.org's ad?

This is not why we the people elect politicians to the U.S. Senate.