Most of the White House Petitions are inane. That is why I'm against pure democracy. You get silliness like the Death Star petition.
I could never sign something that takes away critical rights or limit them when government did not invoke them to begin with. Both sides have a bad habit of legislating without thought.
Then to tax them on the likelihood on being used in a crime? Laughable! So I will pay more in tax on a Hi-Point pistol than I would a Wilson Combat AR-15? Ha!