US immigration policy played a role in crash that killed more than 50 migrants in Mexico

As Mexican officials work to investigate a vehicle collision that has killed at least 53 immigrants and injured at least 50 more, we have to examine what role American immigration policy is playing in these tragedies and in the surge of migrants continuing to come north.

This latest accident happened Thursday when Mexican officials said a cargo truck filled with migrants from Central America rolled over and crashed into a bridge, according to the Associated Press.