Mickey Kaus is a Democrat running against Barbara Boxer for the Democrat nomination for one of California’s seats in the United States Senate.  He wrote a column called “Dems kidding themselves on immigration.” He says:

“the Democrats’ dogma on immigration — they’ve never met an amnesty they didn’t like — is at odds with common sense. After all, why don’t we have free, unfettered immigration – so-called “open borders”? Because half the world would happily move to our country if given a chance. Los Angeles and the Bay Area would soon look like Rio de Janeiro, with vast communities of shacks and slums.”