Will American Tourists Spoil Cuba?

Next week, the Presidents of the US and Cuba will meet for the first time since Fidel Castro's revolution of 1959. The US embargo is still on, but there's now an opening for American tourists who want to see Cuba before it becomes "Americanized." Historic buildings and old cars create nostalgia for life in the 50's — but when average wages are $20 a month they also illustrate poverty and decay. Is Havana a museum piece that's about to be "spoiled," or the capital of a desperate nation hungry for change?