There is a very interesting video of Sen. Joe Biden speaking to a Rotary Club gathering in Columbia, SC in November, 2006. (It's a bit blurry, but you get the picture. )
In response to a question on immigration, Biden speaks with a Tancredo-like toughness on Mexico. He rails against Mexican political corruption, boasts of voting for the border fence and also talks about the urgent need to punsh American employers for hiring illegals. In reality, of course, Biden is shamelessly open borders and has a career grade of "D" and recent grade of "D-" from NumbersUSA. Still, Sen. Biden is the only candidate now in the race who has spoken the truth about Mexico at least once. (See news story on Rotary Club speech).