Well, okay.  But I think your insistence on the 1.3% is a red herring.  I think what the author meant was: "They only look AND DEAL WITH 1.3% of what's coming through the ports."

If they looked at 1.3%, extrapolated out and uses that to deal with ALL products coming through the port (and I'm not sure how they'd do that without closing down the port for a few weeks and checking through every last producer--supplier-shipper-buyer chain--whatever the order is--so that the extrapolation turned into a real regulatory process)...then, really, they're checking 1.3% of throughput and blocking the percentage of the 1.3% (which I read is about 16%) which is fails FDA controls in some way.

That's what I've understood so far.

Don't fight forces, use them R. Buckminster Fuller.