It’s well documented that commercial truck traffic entering the United States from Mexico as is currently practiced poses a serious threat to America’s security.
There are many weaknesses in the system designed and controlled by Mexican citizens with the blessing of the US government, but the most serious flaw may be the resultant drayage, or transfer system, of crossing commercial cargo. The drayage system is just one of the many related security risks.
The risks also include drop lots, or pensiones as they are called in Mexico, that are monopolized by Mexican customs brokers on the border, and the less-than-truck load (LTL) motor carrier crossings that are reliant upon the drayage system. Read more here.