Lou Dobbs has gone and done it again:

On his radio show -- broadcast from the anti-immigration organization Federation for American Immigration Reform's "Hold Their Feet to the Fire" legislative advocacy event -- Lou Dobbs interviewed WorldNetDaily staff reporter Jerome Corsi, who Dobbs described as "a pretty good guy to talk to" about immigration issues. Corsi is a consistent promoter of the conspiracy theory -- previously advanced by Dobbs -- that President Obama has yet to produce a valid birth certificate; the author of falsehood-laden books about Obama and Sen. John Kerry that Dobbs' CNN colleagues panned as "discredited;" and has a history of making bigoted comments, some of which he later apologized for.

The piece documents Corsi's long history of promoting conspiracy theories, including most recently the "birther" nonsense, but more famously the "Swift Boat" garbage that sank John Kerry's candidacy.

Perhaps even more germane is that, beyond the "birther" conspiracy theories, Corsi has most recently been promoting the theory that President Obama is planning to round up conservatives and put them in concentration camps.

This willingness to abet the most insane wingnuttery is yet another drop in the bucket of evidence that CNN needs to give Dobbs the boot if it ever hopes to salvage what little credibility it has left.

A new site called DropDobbs.com is a joint effort by various progressive organizations -- including Media Matters, America's Voice, the Southern Poverty Law Center, and the National Council of La Raza -- to demand CNN make the change:

Over the years, Lou Dobbs has consistently used his CNN platform to spread hatred and fear. He played a critical role in skewing the immigration reform debate in 2006, leading to the derailment of that effort, and his obsession with the issue of immigration and with defeating immigration reform continues unabated. Adding to his repertoire of hate and fearmongering, he has recently aligned himself with the “birther” conspiracists and their racially tinged attack on the legitimacy of Barack Obama’s presidency. From his CNN platform, he has bolstered the claims of those on the fringe by asserting repeatedly that President Obama has failed to produce adequate proof that he was born in the United States. His recent focus on the birth certificate conspiracy issue has reinforced what immigration reform proponents have long known — that Dobbs has a long history of the worst kind of pandering by promoting hate and ethnic and racial division.

Timothy Karr at HuffPo has a thoughtful piece on what we can start to do to confront the flood of toxic garbage that is spewing out of right-wing media these days. Lou Dobbs is only one of the most prominent problems.