The U.S. Secret Service is investigating allegations that one of its agents sexually assaulted a female staff member of the office of Vice President Kamala Harris, the agency confirmed Wednesday. The agent allegedly forced himself onto the woman and groped her in her hotel room after eating a meal and drinking alcohol with her and several other Harris staffers at a restaurant in Green Bay, Wisconsin, during a visit in the past week to scout possible stops for Harris' presidential campaign, Real Clear Politics reported. When asked about that report, a Secret Service spokesman told CNBC, "The U.S. Secret Service Office of