FILE - In this June 25, 2014 file photo, a group of immigrants from Honduras and El Salvador who crossed the U.S.-Mexico border illegally are stopped in Granjeno, Texas. Many of the immigrants recently flooding the nation’s southern border say they’re fleeing violent gangs in Central America. These gangs were a byproduct of U.S. immigration and Cold War policies, specifically growing from the increase in deportations in the 1990s. With weak dysfunctional governments at home, U.S. street gang culture easily took hold and flourished in these countries. (AP Photo/Eric Gay)

Boston to limit detentions of immigrants

Boston has joined a growing number of cities that won't hold immigrants suspected of being in the U.S. illegally for possible deportation un…