This morning in his On the Square column Russell Saltzman shares his intuitions on immigration policy based on his years of research:

Now, that said, my immigration policy is simple.Let ‘em all in. That, I cheerfully admit, likely makes for poor public policy. Nonetheless, it is my instinct, based on my collection of immigrant stories. I’m pretty forward when I hear an accent. I want to know about it so I ask. The stories come easily. Almost everyone is eager to tell me how they got to America, and why. The why is simple: freedom, opportunity, a dream they wanted fulfilled. How they got here is always different. Stories do not make for good public policy either, but they are nice to hear.