A 2004 study by the agency found that 2 percent of fireworks-related injuries that year were caused by homemade or altered fireworks; the majority involved the mishandling of commercial firecrackers, bottle rockets, and sparklers. Nonetheless, Wolfson says, "we've fostered a very close relationship with the Justice Department and we're out there on the Internet looking to see who is promoting these core chemicals. Fireworks is one area where we're putting people in prison."
The story is about a mail-order chemical company that got busted because they sell ingredients - among many, many other things - that CAN be used to make fireworks.
Isn't blowing yourself up making fireworks kind of a self-limiting sort of activity. Is it REALLY worth spending tax-payer money to crack down on this epidemic that involved 2 whole percent of injuries last year.