Mexico is going to cave, and it's not just the tariffs. We've got the Mexicans over a barrel on energy, and if we want, we can wipe their economy out. Without American energy imports, the Mexican economy collapses. This actually doesn't make any sense. Mexico is awash in petroleum and natural gas. But the Mexicans just can't get it out of the ground. American petroleum engineers were critical to the early success of the Mexican oil industry. From 1918 to the late '20s, Mexico was second only to the United States in oil production, and it was number one in...