Yeah, well, they'd never bothered him until he wrote 2 books that contained the recipes for making lots of psychedelic drugs. Shortly after publishing these books (TIHKAL and PIHKAL) the DEA came down on him. In his book he writes that it was very, very clear someone had basically flipped the switch at the DEA and said "shut him down any way you can." The fact that it was the mercury readings in his soil points to the fact they were grasping at straws, especially because they took dozens of soil samples and only one was mildly above normal limits. The DEA was pissed at him for disseminating knowledge, and after they took his license, he basically stopped doing chemistry full time.
