In a 1973 letter, the right-wing billionaire urged the libertarian philosopher to collect Social Security and to use Medicare coverage when visiting the United States.

Michael Dell managed to devalue his Austin ranch from $71.4 million to $290,000. He's not alone: a huge swath of wealthy Americans are misusing tax credits intended to protect farmland.

A Nation article investigating the Astroturf roots of the TSA scandal elicited a fierce rebuttal from Glenn Greenwald of Salon. The authors reply.

Are Astroturf activists at the heart of the revolt against the TSA? And who benefits from the scandal?