There's plenty of opportunity and social mobility here. Take for instance people like Sarah Palin, a person of (at best) middling intellect and ability who, thanks for some neo-con men with boners, engineered her selection as the VP candidate! Now she can leave her piddly ol' governorship of a marginal state behind and set her sights on WH 2012. Definitely an indication of upward mobility here: all you need is a short skirt and a wink and some pointless ramblings about being a hockey mom, and you're ALL SET--and don't forget all the spin off benefits for family: former son-in-law has cashed in on modeling (huh?) and acting (double huh?) contracts, and daughter w/ GED Bristol has just set up a PR consulting firm, just like that! (triple huh?). Shoot, if only other Americans would just get off their lazy asses and take a lesson in independence and hard work from them.
On the other hand, you can be an actual hard-working person, dedicated to your job, and then it gets outsourced, or you lose it (due to the hare-brained management of the economy over the previous 8-10 years) and you are suddenly left without insurance or unemployment benefits and you and your family have to live in a car. Downward mobility, maybe, but technically still mobility, after all. Too bad. Thanks for playing.