trial mexican man accuse murder woman illegally unite state begin san francisco monday case president donald trump cite example dangers pose lax border security juan francisco lopez-sanchez also know jose ines garcia zarate say shoot kate steinle accident pier california city july 2015. plead guilty second-degree murder charge bring 15 years life prison court officials confirm trial start offer detail proceed know object hand gun matt gonzalez attorney defendant quote say nbc bay area head courtroom bear criminal responsibility assistant district attorney diana garcia decline comment case prosecutors accuse defendant recklessly point steal gun people pier prosecutors defense attorneys court immediately available comment garcia zarate deport mexico five time since first enter unite state juvenile san francisco chronicle local media report steinle frequently invoke name trump part signature pledge halt illegal immigration crack so-called sanctuary cities refuse comply certain federal immigration laws june u.s. house representatives vote 228-195 pass sanctuary criminals act would withhold federal grant sanctuary cities vote 257-167 chamber also pass kate law name kate steinle increase penalties illegal immigrants return unite state laws immigrants country illegally would face mandatory detention past convictions expand number offenses san francisco like sanctuary jurisdictions defend approach make city safe say practice inquire immigration status make immigrants include country illegally will report crimes politically charge murder trial mexican immigrant start san francisco