So they prosecuted Shearer and sentenced him to 6 years for selling 400,000 units. No one else was prosecuted besides Ver? Ver sold 14 and got 10 months and 3 years supervised probation.
1000 milligrams of powder is 1/5 of a teaspoon in each device. And sure fireworks are dangerous, but there's no indication or evidence that these were or that they harmed anyone. I accept that it was an illegal activity, because Ver needed a license and shouldn't use the mail to distribute them. But lots of families and kids have more flash powder in their house during fireworks holidays than what he had and they store them in their homes.
So again, I don't see anything here either with his pest control device or with his decision to renounce US citizenship over his prosecution and income taxes that justify USCIS not giving him a visa to make his speech at the Bitcoin Convention. It's a discriminatory treatment, far worse folks are allowed in any time they want for any reason they claim. He paid for his "crime", and he's free to leave our country and establish citizenship elsewhere if he wishes. And as a citizen of that nation, he has every right to expect to be treated the same as any citizen from that nation would be treated.