His own distaste for earmarks!
America's Most Hypocritical Earmark King Is... Ron "The Representative From Stormfront" Paul
Even Paul doesn't say he's not the earmark King! He justitifies them.
...Paul made over $157 million in earmark requests for FY 2011, one of only four House Republicans to request any earmarks. Additionally, he made over $398 million in earmark requests for FY 2010, again one of the leading Republican House members...
Among Paul's earmarks are boondoggles like $38 million to "encourage parents to read aloud to their children", $18 million for a light rail study, $4 million for a "Trails and Sidewalks Connectivity Initiative", $11 million for an ACORN-like "Community-Based Job Training Program", $2 million for a "clean energy" pilot project, and many, many more.
All of the above earmarks can be found on Paul's own congressional website... Paul typically will make the earmark request, but then votes against or abstains from voting on final passage, so he can maintain his claim to have "never voted for an earmark", even the earmark requests he himself made.