From what I understood, Motorex did some shady deals (involving stealing cars they sold and then reselling them). Because of that law enforcement got involved. As a result, Skyline importation came under scrutiny. Last time I check, you could not import an R34 or R33 into the US with the intent to register and drive it. However, you could for the R32, this was from the DOT.
But still neat information and a good find. Thanks for sharing.
"The 300ZX Turbo is a dance; it's a song; it's rolling, roaring automotive art. There is no color that doesn't suit it. There is no mood-lifting chemical substance it can't replace." - Automobile Magazine