The authors propose a view of optimal currency areas that is based on the principles of public finance. Inflation taxes are distortionary, and an optimal spreading of tax distortions may require high inflation in one region and low inflation in another. Each region would need its own currency to do this. On the other hand, multiple currencies imply valuation and currency conversion costs, which impede trade between regions. This tradeoff is explored in the context of the European Community's debate over a common currency, using a two-country variant of Robert Lucas and Nancy Stokey's cash-in-advance model.

By affecting relative economic returns, public infrastructure investments can induce major changes in private land use. We find that 30 percent of forested wetland depletion in the Mississippi Valley has resulted from private decisions induced by federal flood-control projects, despite explicit federal policy to preserve wetlands. Our model aggregates individual land-use decisions using a parametric distribution of unobserved land quality; dynamic simulations are used to quantify the impacts on wetlands of federal projects and other factors.

This paper examines the effects of the Federal Trade Commission's Advertising Substantiation Program, developed in the early 1970s. This program coupled changes in the legal definition of deception with more vigorous FTC enforcement. The authors analyze changes in advertising intensity, media choice, media wealth, and the progress of new entrants. The evidence suggests that adoption of substantiation requirements increased the credibility of advertising.

We propose a view of optimal currency areas that is based on the principles of public finance. Inflation taxes are distortionary, and an optimal spreading of tax distortions may require high inflation in one region and low inflation in another. Each region would need its own currency to do this. On the other hand, multiple currencies imply valuation and currency conversion costs, which impede trade between regions. This tradeoff is explored in the context of the European Community's debate over a common currency, using a two-country variant of Lucas and Stokey's cash-in-advance model.

This paper examines the effects of the Federal Trade Commission's Advertising Substantiation Program, developed in the early 1970s. This program coupled changes in the legal definition of deception with more vigorous FTC enforcement. We analyze changes in advertising intensity, media choice, media wealth, and the progress of new entrants. The evidence suggests that adoption of substantiation requirements increased the credibility of advertising.