What are you referring to, exactly? There certainly is no enforceable law in the United States against LGBT content. There theoretically are restrictions on "obscenity," but they are virtually nonexistent in practice. The only law I can think of that resembles what you're describing in any way is our, indeed, quite aggressive ban on child pornography. And I'm no expert on Canadian child pornography laws, but I'll bet Canada isn't too friendly to that content either.
The theoretical point is true enough, that American content restrictions would generally wind up being exported abroad. The key difference is, however, that we do not actually have Chinese-style content restrictions.
The theoretical point is true enough, that American content restrictions would generally wind up being exported abroad. The key difference is, however, that we do not actually have Chinese-style content restrictions.