Well, it does require running for 90 mins straight and technical ability bayouboy, yea am pretty sure its chances of mainstream in the US are quite slime
I actually see football becoming quite big in the US in the next 10 years, the latent potential is amazing and with good shows in the World Cup it definately looks promising.
MMA is gonna help football in the US too id reckon, as more people realise watching guys constantly in action is better than timeouts is actually cool, theyre will be more interest going into it, but Beckham getting fame there is really pouring poison in an open wound for the chances, he is god awful lol.