“As new priorities emerge, policymakers have demonstrated interest in user fees as a means of financing new and existing services. User fees can be designed to reduce the burden on taxpayers to finance the portions of activities that provide benefits to identifiable users above and beyond what is normally provided to the public. By charging the costs of those programs or activities to beneficiaries, user fees can also promote economic efficiency and equity. However, to achieve these goals, user fees must be well designed.” GAO Report of May 2008