Comment by ceejayoz

> Who would have guessed the regulations would have been enforced so rigorously in 1969 when three men returned to the U.S. from a rather long business trip – to the moon and back.

I mean, I'd imagine it was mostly done for the joke aspect.

edit: https://www.space.com/7044-moon-apollo-astronauts-customs.ht...

> "Yes, it's authentic," NASA spokesperson John Yembrick told Space.com. "It was a little joke at the time."