What political forces help prevent the more widespread implementation of user fees? (hint: Are the costs of such fees dispersed among many voters or concentrated on a few?)
Currently, it is difficult to sue the federal goverment unless it agrees to be sued. If the law were changed so that lawsuits (such as by victims of the collapse of the I-35W bridge) were easier, how would this change the incentives of the goverment to properly maintain bridges, road, and dams? How likely is the goverment to agree to such a legal change ?