Don't forget that he also opened for Ozzy and Metallica back in '08. And they were also about to release a CD and do a reunion tour. I don't know what's going to happen right now.
The problem is they have said that before so that doesn't mean much. The only sign right now that they might is they're doing one in Japan and it's early.
Congress doesn't even see the petition unless there's at least 25,000 signatures. Once it reaches 25,000 signatures a bill is written and it is voted on by congress. Whether or not they've started writing a bill is completely different.