I've never once been asked to remove her at either airport, but I just found this:
https://www.disboards.com/showthread.php?p=38996019
I figured as much. Thank goodness I am not traveling by myself because having Tracey in the moby or Beco has been the key to my airport survival. I guess I'll just have to put it on once I'm through. It makes me never want to travel with her alone again though!
Re: some confirmation that babies have to come out of slings in Houston