And the fun's not over yet.
In Westword this week, I publish excerpts of that discussion -- and you can watch the debate online at the link above.
The discussion will live on, though, because Arellano has invited Tancredo to take over his nationally syndicated column one week, as he did last year when Minuteman founder Jim Gilchrist was the guest columnist of Ask a Mexican -- on April Fool's Day.
But this is no joke. Start posting your questions for Tancredo's edition of Ask a Mexican below.