A telecommunications executive today resigned from his director's seat at Newport Beach-based Mindspeed Technologies to work at the White House as Barack Obama's director of presidential personnel.Obama can thus expect heavy scrutiny from net-neutrality advocates fearful of Donald H. Gips' closeness to power. Neutrality proponents, who include Google, warn that telecom companies are heavily lobbying U.S. politicians to impose a tiered service model at the expense of other companies and the gener