Your post to me is quite curious, as you seem to be suggesting that I had a problem with allowing Miller to speak freely.  You can read into my words what you will, that is your RIGHT, but unlike Miller, I will not say you have NO RIGHT to do so.

However, on speech specifically:
Even conservative spaces of higher learning don't invite alt-right extremists to speak.  Prominent evangelicals do not support the alt-right: "three people associated with the alt-right movement were given jobs in the White House".  You can read the quote by the evangelicals open letter to POTUS here:

http://www.cnn.com/2017/09/28/politics/trump-alt-right-evangelicals/index.html

U.S. Supreme Court, no "‘hate speech’ exception to the First Amendment".  
https://www.washingtonpost.com/news/volokh-conspiracy/wp/2017/06/19/supreme-court-unanimously-reaffirms-there-is-no-hate-speech-exception-to-the-first-amendment/?utm_term=.ae2a36637145