An Outer Space Border Fence?
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The Bush-Obama Administration has pledged billions of dollars to build a "virtual fence" of sensors on the Mexican border to notify the Border Patrol when and where illegal aliens cross it. As a commenter suggested, if the ungrateful public turns out to be unmollified by that, the Bush-Obama Administration would no doubt be willing to consider making the invisible fence twice as tall.

Seriously, why not use satellites with infrared cameras? Sure, they don't work in cloudy weather, but how much cloudy weather do you see on the Arizona-Mexico border?

A reader writes:

I was looking at a globe today as I dusted. If a satellite orbits over 32 to 35 degrees latitude, it flies over the Mexican border and also Iran, Iraq, Israel, Pakistan, and Afghanistan. . . Do you suppose we have any satellites flying there?
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