There's joint enforcement of the Canadian and U.S. regulations. Right now, the difference between the Canadian and U.S. regulations is that Canada's regulations are more comprehensive. They deal with ships that have ballast and ships that don't have ballast—the no-ballast-on-board ships, which I'm sure you've heard of them.
Currently, the U.S. regulations do not deal with NOBOBs. So that has been an area of concern for a number of jurisdictions across the Great Lakes, particularly the Great Lakes states. As Ala said, a number of those states have introduced their own regulations, which causes problems because shipping is at the international level, not the regional level.
So what the U.S. Coast Guard has done is to introduce an environmental impact statement outlining their plan to create regulations that will develop a standard for ballast discharge. That ballast discharge standard will be consistent with the Canadian regulations. Assuming that that process goes through and is approved, we hope it will be consistent with the Canadian regulations.