Sorry, Ron Paul. The border fence is NOT a “waste of money.”
$3 million a mile seems expensive. But that means < $6 billion for the entire USA-Mexico length.
In 2009 alone, the Federal and state governments collected $4.35 billion in excise taxes and business taxes relating to the firearms and ammunition industry. Of course, not all of those were Federal taxes, but I bet that the Feds could pay for the whole border fence with two years’ of gun and ammo taxes and firearms industry business taxes, and still have enough left over to bribe a dictator or three.