I’m not sure what context this statement was made in other than what’s in the video.  It doesn’t sound like he’s making a joke although I guess it’s possible.  I would think that if he were joking there would be more than a few nervous chuckles from the audience.  At any rate, it’s a little concerning to hear a probably Presidential candidate say something like this…especially after thinking about it first.

“Over the last 15 months, we’ve traveled to every corner of the United States. I’ve now been in 57 states? I think one left to go. Alaska and Hawaii, I was not allowed to go to even though I really wanted to visit, but my staff would not justify it.”