I wasn't kidding when I wrote in this week's column that "at the end of Swine Flu, Week One, the first line of flu defense at the U.S.-Mexican border are American bus drivers spraying their buses with cans of Lysol."

It's true. See here to read about the Lysol-plus-Clorox defense one Fort Worth company is deploying to prevent its buses from bringing in more flu cases on its Oklahoma-Fort Worth-Austin-Juventino Rosas route (Juventino Rosas is in the Mexican state of Guanajuato), and see here how a Houston company, "one of dozens in Houston focused on Mexico travel," is spraying so much Lysol on its buses even Joe Biden would surely like to take a ride.

The point is--and what really inspired the column--there is literally nothing on earth that compels the US government, whether Bush-led or Obama-led, to defend our southern border: not terrorism, not illegal immigration, not drug cartel wars, and not even what is being billed as the 21st-century-plague.