Doing Business in Mexico 2007, released today, tracks all 31 Mexican states on 4 areas of regulation - starting a business, registering property, getting credit and enforcing contracts. As the most populous city, Mexico City is the yardstick that earned Mexico's 43rd place rank on the global rankings. But the subnational report puts Mexico City 10th, behind the much-reformed Queretaro - last year's worst performer. Like the inaugural Mexican report last year, Aguascalientes wins top honors for ease of doing business.
Also, see a prior post on Mexico's investment climate.