The immigration debate in the 2016 presidential campaign unfolded along familiar lines: Republicans called for greater border security and Democrats called for expanded rights for those in the country illegally.
All that changed one blue-sky day at Pier 14 on San Francisco's world-famous Embarcadero. A 32-year-old woman was killed July 1 while strolling with her father near the Bay Bridge, allegedly by an immigrant with a lengthy rap sheet who was back in the country despite repeated deportations.
The death of Kathryn Steinle scrambled the political equation overnight, throwing immigration reform advocates on the defensive, fueling the anger of hard-liners and causing even supporters of San Francisco's liberal politics to pause and consider its status as a "sanctuary city" that generally refuses to turn over immigrants to federal law enforcement officials.