There are plenty of players to be found there that they can sell on making a few hundred thousand in America where they can excel enough to move to Europe.
So then answer the question, just how dumb and/or lazy do you suppose all these South Americans are that they are sitting at home hanging out at the coffee shop when they could be making a couple million dollars playing in MLS? Especially ones that are good enough that a few years in the US will lead to a move to Europe.