In my humble opinion I would suggest the USA whole heartedly go after the 2022 Winter Games (be it with Reno-Tahoe or Denver) and then go directly after 2024. There is no guarantee that we would win 2022 just as there is no guarantee that South Africa would win 2024! Admittedly, if SA submits a competent bid they will be difficult to beat after FIFA 2010's success. I see the major stumbling block to a 2024 USA win to be the issues with a stadium and if the USA were to put together an exciting bid, one that could entice the IOC away from the new frontier of Africa. NYC just built 3 new stadia, 1 in New Jersey for the Jets and Giants, and new homes for the Yankees and Mets. How could another new stadium be justified? Chicago faces a similar issue, what could a new stadium in Chicago be used for after the games?? Kind of a waste to build a temporary that will for the most part go unused after the games. Los Angeles is in need of a new stadium, however the need there is for a stadium for an NFL team to be lured to LA. Can a stadium be designed that could be used for both Olympic Track and Field and then be adapted to be on par with the new NFL super stadia????? Los Angeles would be my 3rd choice in the USA behind NYC and Chicago but I feel that it is the most pragmatic choice. They would need to put together a knockout bid in order to beat some of the cities mentioned that would be their competition. Also is the fact that both 2022 and 2024 bids coming from cities in California a concern?? Probably would be in this case.
OK, let the tirades begin!