65% of the cocaine that makes it into the United States comes in through the U.S. Mexico Border. The rest mainly comes in through South Florida.
Cocaine does not only come into the U.S. via large shipments. It enters in concealed kilo quantites through carriers, or "mules" who smuggle it in undetected.
Hidden labyrinths and smuggling routes have been made by cocaine traffickers to minimize law enforcement entanglement when bringing cocaine into the United States.