For months, the state Department of Workforce Development (DWD) has been criticized for its backlog of unpaid unemployment claims. Currently, it's at more than 35,000. That's a reduction from nearly 400,000 last summer. The backlog led to the resignation of the department's secretary , Caleb Frostman, in September. But many Democrats, including Sen. Tim Carpenter of Milwaukee, said Wednesday that the backlog has more to do with the infrastructure than any mismanagement or lack of leadership. "I