Remarks at the Committee on International Monetary Law of the International Law Association Meeting, Madrid, Spain.

Since the seminal work of Krugman, product variety has played a central role in models of trade and growth. In spite of the general use of love-of-variety models, there has been no systematic study of how the import of new varieties has contributed to national welfare gains in the United States....

Payday loans are widely condemned as a “predatory debt trap.” We test that claim by researching how households in Georgia and North Carolina have fared since those states banned payday loans in May 2004 and December 2005. Compared with households in all other states, households in Georgia...