Don't know if it is still true, but when I was there, even photographs of magazines displaying pubic hair were illegal. However, if it were a drawing (including those near photographic quality), anything was OK.
True story, my boss was returning from a business trip from Europe with a half-dozen popular magazines of a pornographic nature which his boss asked him to bring home. Just to be safe, he asked the customs agent (female) if the magazines were OK. She took them, paged through them and told him they were not.
Since he had checked first, then signed a wavier consenting to their seizure, there was no fine. But she spread the magazines out on the counter, cataloged each one, ripped an offending page from each as evidence and stapled them to his copy of the wavier (with the offending parts blacked out) before he left the checkpoint.
He was embarrassed, but happy since the document also showed what he paid for each magazine so he could collect from his boss.
Reminds me of that scene in Woody Allen's "Take The Money and Run", where Allen is in a store quietly and discretely trying to buy a copy of Screw magazine. The guy at the register, not knowing the price, shouts across the store to his coworker, "Hey Lou, what much is Screw magazine? This guy wants to buy a copy!"