Earlier quoted context omitted.
> When did we become so comfortable with the government mandating presentation of papers and tracking of private transactions? After Timothy McVeigh blew up a building with a truck full of agricultural supplies.
How well did that prevent 9/11? The decrease in domestic terrorism is due to societal changes and better old-fashioned policing of home-grown extremist groups. We didn’t somehow make it impossible (or even difficult) to improvise large explosives.
The actual bomb planning for the Oklahoma City bombing was less than a year and involved two people. So, seems like the bar was raised quite a bit.