Based on the response to Rep. Tom Tancredo's ad about terrorism, one thing is clear: the nutroots/netroots (like Crooks and Liars, Raw Story, etc.), supposed mainstream bloggers/pundits (like Matt Yglesias), and the MSM just don't take border security that seriously. Some Democratic politicians might not go that far, and some might truly support border security, but most of them - including the top-tier Democratic candidates - simply talk a good game.

Hopefully Frank Luntz or similar is working on rhetoric that would expose this abject failure to protect the U.S. and that could be used by various candidates when it applies. In the meantime, here's my first attempt:

The Democrats just don't see terrorist infiltration of the U.S. as an important issue and would prefer to concentrate on more important things.

It needs a bit of clean-up; I use "important" twice.