Could the UN Actually Lead a Charge to Tax the World’s Rich?

Photograph Source: badlyricpolice – CC BY 2.0

Our world does not lack for international agreements. The United Nations, the official depository for global pacts, currently has over 560 on file.

Some of these agreements have already made an appreciable — and positive — difference. Others may turn out to have some meaningful potential. This past November, for instance, saw the adoption of a “Convention on the Contract for International Carriage of Goods by Rail,” a climate-friendly...