Indeed, Kevin- sort of a variation on a theme by Phil Ochs:

Well, there really is no need to travel to these evil lands
Yes, and though the list grows larger you must try to understand
Try hard not to worry if someday you should hear
That the whole world is off limits, visit Disneyland this year

William Worthy isn't worthy to enter our door
Went down to Cuba, he's not American anymore
But somehow it is strange to hear the State Department say
You are living in the free world, in the free world you must stay