What is the gigantic mistake here? Per the story: The RINs were supposed to be retired each time the shipment passed the border, but due to a glitch not all of them were. Really, we have no idea whether this glitch was legislative, administrative, or database-related.

Update from the CBC story linked downthread: Once "imported" to a company capable of generating RINs, ownership of the biodiesel was transferred to Bioversel's American partner company, Verdeo, and then exported back to Canada. RINs must be "retired" once the fuel is exported from the U.S., but Bioversel says Verdeo retired ethanol RINs, worth pennies, instead of the more valuable biodiesel RINs. Bioversel claims this was all perfectly legal.

So basically Verdeo was lying to the EPA by claiming it was exporting ethanol rather than biodiesel. I would not like to be the person trying to explain to a court why that should be considered legal.