Sen. Ben Nelson (D), for example, told the Omaha World-Herald this week that he has never once used an ATM, relying on bank tellers instead. His Nebraska colleague, Sen. Mike Johanns ®, has used his ATM card fewer than five times. And Sen. Charles E. Grassley (Iowa), the ranking Republican on the Finance Committee, told the newspaper that he has a bank card but doesn’t use it for cash. “I’ve never used an ATM, so I don’t know what the fees are. It’s true, I don’t know how to use one,” Nelson, 69, said.