Not quite, there's also a rule that you can't operate an aircraft within 8 hours of consuming alcohol, aka. "8 hours bottle to throttle".
32 karma · joined September 13, 2016
> A few days later the book showed up at Random House—it had passed through customs. Furious, Ernst personally marched the package over to the customs office and demanded that it be searched. When the inspector opened it and found Ulysses, he muttered, “Oh, for God’s sake, everybody brings that in. We don’t pay attention to it.” Ernst insisted that he seize it. On May 8, the book was officially seized by customs.
In lieu of the usual fees, he would receive 5% of the book royalties should it be legalized and published (not a bad deal).
More backstory here: https://crimereads.com/banned-books-ulysses-joyce-morris-ern...