U.S. Sen. Ron Johnson is rolling his mobile office into the area with stops next Tuesday in Wittenberg, White Lake and Keshena. Consituents will be able to meet with his staff in order to request help with a federal agency or any other federal matter. The mobile office will be at the Village of Wittenberg Community Center from 9a, to 10pm and at the Village of White Lake from .11:30 a.m. to 12:30 p.m.