The other force that makes American laws complex is lobbying. The government’s drive to micromanage so many activities creates a huge incentive for interest groups to push for special favours. When a bill is hundreds of pages long, it is not hard for congressmen to slip in clauses that benefit their chums and campaign donors. The health-care bill included tons of favours for the pushy. Congress’s last, failed attempt to regulate greenhouse gases was even worse.Two forces make American laws too complex. One is hubris. Many lawmakers seem to believe that they can lay down rules to govern every eventuality. Examples range from the merely annoying (eg, a proposed code for nurseries in Colorado that specifies how many crayons each box must contain) to the delusional (eg, the conceit of Dodd-Frank that you can anticipate and ban every nasty trick financiers will dream up in the future). Far from preventing abuses, complexity creates loopholes that the shrewd can abuse with impunity.