Mexican immigration poses challenges to our policies and to our identity in a way nothing else has in the past.

Much of what we now consider to be problems concerning immigration and assimilation really concern Mexican immigration and assimilation.

But then I came to the conclusion that no, while there may be an immigration problem, it isn't really a serious problem. The really serious problem is assimilation.

I don't have nothing to regret at all in the past, except that I might've unintentionally hurt somebody else or something.

All the things that are in the past are in the past.

There's no sustenance in the past.