Certainly one of the vectors, and I think probably the most important vector, is the shipping that's coming in from the St. Lawrence River Valley and coming in from the gulf and coming in from overseas.
We've already alluded to the fact that in 2007 Transport Canada changed the regulations regarding shipping and salinity requirements and that. How much monitoring is there of that? I'm especially interested in a comparison between the U.S. and Canada. Are we more vigilant, or are we less vigilant? Are we able to be as vigilant? Are there any differences between the enforcement of regulations in Canada and the U.S., or is there an absence of regulation in Canada versus the U.S.?