We study a political economy model of entry barriers. Each period the policymaker determines whether to impose a high barrier to entry, and the special interest groups try to influence the policymaker's decision. Entry is accompanied by creative destruction - when many new firms enter, old firms...

We investigate the welfare effects of eliminating business cycles in a model with substantial consumer heterogeneity. The heterogeneity arises from uninsurable and idiosyncratic uncertainty in preferences and employment status. We calibrate the model to match the distribution of wealth in U.S....