US will have a tough time beating out all of the European bids for the 2018 World Cup (England, Russia, Belgium/Netherlands, and Spain/Portugal). If a European nation got the '18 Cup, it would be down to US, Australia, Japan, Qatar, and South Korea for 2022. I like our chances much better against that group.
Of the 20 other stadiums vying to be one of the host venues, many are nicer, newer, larger, and outdoors. GA Dome will need some help. Would having the broadcast headquarters in Atlanta help secure the GA Dome as a host venue? Or would they intentionally put the broadcast hq in a city that they don't expect to host any matches?
http://en.wikipedia.org/wiki/United_States_2018_and_2022_FIFA_World_Cup_bid