President Barack Obama, right, is greeted on the tarmac by California Gov. Jerry Brown, center, and San Francisco Mayor Ed Lee, left, at San Francisco International Airport, Friday, Oct. 9, 2015 ,in San Francisco.
President Barack Obama, right, is greeted on the tarmac by California Gov. Jerry Brown, center, and San Francisco Mayor Ed Lee, left, at San Francisco International Airport, Friday, Oct. 9, 2015 ,in San Francisco. Pablo Martinez Monsivais AP
President Barack Obama, right, is greeted on the tarmac by California Gov. Jerry Brown, center, and San Francisco Mayor Ed Lee, left, at San Francisco International Airport, Friday, Oct. 9, 2015 ,in San Francisco. Pablo Martinez Monsivais AP