Here's an excerpt from the British TV program "Top Gear" concerning U.S. Visas: rather topical for the current travails of our lab:
James: What we have down here is a selection of American muscle cars. Now the recipe for this for this sort of thing was always very simple: massive engine; crude, simple suspension; very low price; and finally [gesturing to a Dodge Challenger] some orange paint. Now, this sort of thing never really caught on in the civilised world and we thought that what with petrol prices being so high now, they'd have died out in America as well.
Richard: However, in the last few months three brand-new American muscle cars have arrived. So we thought we best pop over to the states and find out if they're any good.
Jeremy: Unfortunately, there was a problem. You see, we all have visas which allow us to go to America and make a factual documentary. But, since our last trip over there when I might have accidentally put a cow on the roof of my car, the American — the U.S. state department no less — has decided Top Gear is actually now an entertainment show.
James: And unfortunately that requires a different type of visa and we didn't have time to go and get one. So, in the end we were only allowed in to the country if we promised — this isn't a lie is it?
Jeremy: No, this is absolutely, hand on heart...
Richard: This is for real.
James: — if we promised not to be entertaining.
with credit to where I originally found this.