Sitting on the 5 Year $43 Million anti-drug Study

A White House Drug Deal Gone Bad
Sitting on the negative results of a study of anti-marijuana ads.

..."The White House Office of National Drug Policy paid for a 5-year, $43 million study which concluded their anti-drug ad campaigns did not work -- but it refused to release those findings to Congress..."
--Thanks to Slate and TPM Muckraker, go for the full report.