If that became a problem, the U.S. could simply eliminate copyright protection for child pornography. Thai producers could not turn a profit when faced with Mountain View pirates.
Im pretty sure possession of child porn is illegal. You don't need to mess with copyright protection at all. And widespread piracy doesn't stop the commercial enterprises, after all, Hollywood is the most pirated and massively profitable
There is virtually no piracy of Hollywood movies, at least in the U.S., thanks to their strenuous enforcement of copyright. If piracy were rampant, you could buy the latest blockbuster for $0.50 at Wal-Mart on opening day. (Hint: the actual price is jacked up one or two orders of magnitude by the MPAA's jack booted thugs.)