U.S. immigration authorities will continue to enforce federal laws against marijuana and use them as a basis to deport undocumented immigrants, says John Kelly, U.S. Secretary for Homeland Security, on Tuesday.

Immigration and Customs Enforcement (ICE) “will continue to use marijuana possession, distribution and convictions as essential elements as they build their deportation removal apprehension packages for targeted operations against illegal aliens living in the United States,” Kelly said in a speech at the George Washington University, according to the New York