Former US ambassador to Mexico: Tariffs will not help curb migration

President Trump announced last week he is imposing new tariff on imports from Mexico to try and curb illegal immigration on the southern border. Former U.S. Ambassador to Mexico Carlos Pascual joins "Squawk Box" to discuss his new op-ed in which he says tariffs would cripple Mexico's ability to deal with migration.
Fri, Jun 7 201911:47 AM EDT