In an interview with F1 Kate Walker, Carlos Slim said there will be a Mexican GP, work has already started. He is used to getting what he wants. Bernie has said there should be an equal split of races between Europe, America (North & South), and Asia. He has Canada, 2 in the US (most pundits are betting NJ goes ahead), Brazil, Mexico on a back burner, so he needs 1 or 2 more to get his balance. Rumors have circulated about Argentina, Puerto Rico, and Venezuela, but nothing seems very concrete.
I've always loved how Formula One always resorts to trickery to allow countries to host multiple races in a single season: the European, San Marino and Luxembourg GPs, except for the USA. In the past they get the US GP, US East GP and US West GP. Now they get the US GP, the American GP and then the Puerto Rico GP?
(Is it just me, or shouldn't the race at Circuit of the Americas be called the American GP instead of the other way around?)