USA-Mexican Border 2006
San Luis, Arizona.USA.October 23, 2006..The US National Guard constructs a three tiered fence along the Mexican - USA border near the San Luis port of entry. The second metal meshed fence is placed deep into the ground to keep illegal immigrants from digging under the fence to enter. Border patrol vehicles run between the three fences to catch those trying to enter. Thousands of illegal immigrates cross at this point every year..