This is one of those times I wish someone with detailed knowledge of national politics could comment on this rather odd move. Why is a Congressman from Kansas making a public comment about a speaker in an event in Texas? Is he cementing his base? Pandering to his donors? It's not like SXSW is going to go, "Oh, you're absolutely right congressman, why didn't we think of that sooner?" so what's he really trying to achieve here?

BTW good on SXSW organizers for involving Snowden in some way. I suspect that if you polled the participants you'd see a 90%+ Snowden approval rating.