The United States and Canada maintain a 5,525-mile border with 330,000 daily crossings and $2 billion in daily goods trade. The U.S. has announced plans for 50% tariffs on $20 billion of Canadian products effective at 12:01 a.m. Wednesday, with both countries engaged in ongoing negotiations. A petition calling for the expulsion of U.S. Ambassador Pete Hoekstra has gathered nearly 218,000 signatures.