Funny incident on the radio. I was listening to comedian Rush Limbaugh go on and on about how the illegal immigration issue is a surefire winner for the Republican nominee in the 2008 presidential election.

Just a couple minutes later a caller comes on and asks which Republican candidate is best suited to carry the GOP torch on the illegal immigration issue.

That seems like a pertinent question, doesn't it? If your party has a winning issue, you want to vote for a strong candidate.

Oddly, Limbaugh didn't have an answer. He said something about only paying attention to a few (Republican) candidates and made a bumbling comment about Governor Romney being pretty good.

You'd think that on such an important issue, Limbaugh might do a little more homework.

I'm not a GOP insider, but I'm pretty sure Representative Tom Tancredo has made illegal immigration his signature issue. In fact, immigration is the only issue I associate with Tancredo. And yet Limbaugh didn't even bother to mention him. How come?

It couldn't possibly be because Tancredo, running on the all-important immigration issue, has languished at the bottom of the polls, could it? That's a rather inconvenient fact to square with Limbaugh's theory.