Social mobility is crucial. Income disparity is inevitable, and NOT un-American.
And no one said it wasn't, including Bush.
Social mobility is crucial.
If by "crucial" you mean essential to maintaining the American way of life then you are actually in agreement with Jeb Bush who had this to say:
"You have people that are born poor and there's a higher and higher probability that they're going to stay poor. And you have people that are born rich and there's a greater probability that they'll stay rich. "It's just so un-American,"