FRONTLINE investigates how President Trump turned immigration into a powerful political weapon that fueled division and violence.

The documentary goes inside the efforts of three political insurgents to tap into populist anger, transform the Republican Party and crack down on immigration.

This journalism is made possible by viewers like you. Support your local PBS station here: http://www.pbs.org/donate

Love FRONTLINE? Find us on the PBS Video App where there are more than 250 FRONTLINE films available for you to watch any time: https://to.pbs.org/FLVideoApp

Subscribe on YouTube: http://bit.ly/1BycsJW

#ZeroTolerance #Immigration #TrumpAdministration

Instagram: https://www.instagram.com/frontlinepbs
Twitter: https://twitter.com/frontlinepbs
Facebook: https://www.facebook.com/frontline

FRONTLINE is streaming more than 200 documentaries online, for free, here: http://to.pbs.org/hxRvQP

Funding for FRONTLINE is provided through the support of PBS viewers and by the Corporation for Public Broadcasting. Major funding for FRONTLINE is provided by the John D. and Catherine T. MacArthur Foundation and the Ford Foundation. Additional funding is provided by the Abrams Foundation, the Park Foundation, The John and Helen Glessner Family Trust, and the FRONTLINE Journalism Fund with major support from Jon and Jo Ann Hagler on behalf of the Jon L. Hagler Foundation.