Certainly I'll start, and I would like my meat colleagues to contribute as well.
The trade in agricultural products is in a highly regulated sector, with food and feed safety regulations on both sides of the border essentially looking to accomplish the same thing. When product crosses the border from one country to another, however, you're not just meeting the Canadian regulations but also need to meet the U.S. regulations and the inspection that comes with them.
When it comes to something like meat, which is highly regulated in the same way that many other agricultural commodities are highly regulated, there is an additional inspection required for meat products when they cross the border. Even though none of us, when we travel to the United States, would think that any meat we eat is unsafe, and I'm sure no American coming to Canada would think the meat they might eat would be unsafe, it needs to go through that extra inspection process in order to meet the regulatory requirement.
Maybe I can turn it over to my colleagues to provide more detail.