Here's a topic that I've never heard a definitive answer on; why was the artwork for The Offspring changed for the 1995 release? I'm new here, and I did a quick search for 'Marc Rude' on the forums, and didn't turn up much.
The first argument is that the artwork was so graciously violent that the band quietly changed the artwork for the re-release on Nitro. The other is that the Offspring wanted to avoid legal action by the use of the Xenomorph from the Alien series without permission. Though I guess it's not limited to these reasons; it could be that Dexter just wanted to change the artwork, or a mix of multiple reasons.
Personally, I think it's due to copyright reasons. With an underground LP released in limited quantities, who was there to be really offended? The original artwork was also shown alongside the re-release on the official website for the better part of the 90s. It was only later that we were supposed to believe that neither the original artwork and "Kill the President" didn't exist ("Kill the President" was actually still listed on the site as late as 2003). So what's the deal?