San Francisco on Tuesday sued President Trump, claiming that an executive order aimed at cracking down on so-called sanctuary cities was unconstitutional. At a press conference Tuesday live-streamed by the city, San Francisco City Atty. Dennis Herrera said Trump’s order was unconstitutional and “un-American.”The cities Trump is targeting have many tools to strike back. San Francisco declared itself a sanctuary city in 1989, and city officials strengthened the stance in 2013 with its “Due Process for All” ordinance. UPDATES:10:50 a.m.: This post was updated with new information about the lawsuit, comment from San Francisco's city attorney and larger context about sanctuary cities.

Source: Los Angeles Times January 31, 2017 18:35 UTC