The FDA has figured out what security analysts have known for years: Our centralized food system makes an easy target for agroterrorists. The Philadelphia Inquirer has an article that describes an exercise to find weaknesses in dairy systems. No surprise, but dairy farms and their distribution centers offer plenty of opportunities for would-be terrorists.
The FDA is aware of the threat, but I'm sure they'll handle it the same way the rest of the government deals with security issues: Wait until someone exploits the weakness, and then enact the simple rules that would have stopped the attack in the first place. Of course, those new rules will add costs, which will hit small farmers the hardest. Shop from them now so they can save up.
