Mr. Valdez ' illegal career took off after the arrest in March 2003 of Osiel Cardenas , who controlled the drug trade in Nuevo Laredo , the busiest port along the 2,000-mile border between the United States and Mexico .
Mexico /location/location/contains Nuevo Laredo
NNP NNP POS JJ NN VBD RP IN DT NN IN NNP CD IN NNP NNP , WP VBD DT NN NN IN NNP NNP , DT JJS NN IN DT JJ NN IN DT NNP NNPS CC NNP .
Mexico
LOCATION
Nuevo Laredo
LOCATION
/location/location/contains