also goveor gavin newsom issues ad crackdown on use of vaping as dozens have fallen ill and two have rodied fm vaping. >>> plus a look toalifornia opera singers who are chance under. evening transept good evening. we begin tonight prwith esident trump's visit to california earlier this week. on tuesday presidentrump kick off two days of fundraisers in california. he met with wealthy donors in the bay area and southern california to raise millions republican national committee. but he also raise the ire of top state officials announcing his administration would revoke califoia's ability to set its own for field emission standards. since 1970, the epa has granted california a waiver to enforce aggressive air pollution standards that are today followed by 13 other states. threatened legal action and called the move quote a continuation of a political vendetta against california. with is now a senior research fellow from stanfo university michael warren. thank you for joining us. so, president trump, he doesn't come to california very often and what does he do while he's g-standing autho