President Barack Obama will star at an “intimate” $32,400 per head June 6 fundraising dinner and discussion in the Portola Valley home of star Silicon Valley venture capitalist Vinod Khosla and his wife, Neeru, according to the invite obtained by the Chronicle. The dinner is one of two events in Peninsula private homes on Obama’s upcoming fundraising swing here, which benefits the Democratic Senatorial Campaign Committee. In addition to the Khosla home dinner, Obama will also attend an earlier reception in the home of Marci and Mike McCue of Palo Alto. McCue co-founded Flipboard, and serves as its CEO. Senator...