There is little that is undisputed about the Kate Steinle case, beyond the crucial fact that she was killed on July 1, 2015, by a bullet that struck her on a picturesque San Francisco pier. On Monday, lawyers started making their closing arguments in a murder case that became a flash point in the 2016 election, because the man accused of killing 32-year-old Steinle, Jose Ines Garcia Zarate, is an undocumented immigrant.