Hillary consultant's expenses paid by CNN to ask question at GOP debate

Fox News writes about the gay Hillary consultant, Keith Kerr, who asked the question at last night's Republican debate:

Kerr submitted the question for Republican candidates at the video debate "a couple months ago," and said last Saturday CNN called him and said they'd like him to come to the debate. He said the cable news network paid for his flight, his hotel and his transportation to and from the event.

Is it normal for networks to pay for people to attend debates to ask a question? Read the rest of the article here.