A congressional investigation revealed that the NFL attempted to influence research regarding concussions.

At least a half-dozen top NFL health officials waged an improper, behind-the-scenes campaign last year to influence a major U.S. government research study on football and brain disease, congressional investigators have concluded in a new report obtained by Outside the Lines.

 The NFL tried to get prominent researchers taken off the study and redirect funds to NFL researchers.

After the NIH rebuffed the NFL's campaign to remove Robert Stern, an expert in neurodegenerative disease who has criticized the league, the NFL backed out of a signed agreement to pay for the study, the report shows. Taxpayers ended up bearing the cost instead

 You can read more about it here.

http://espn.go.com/espn/otl/story/_/id/15667689/congressional-report-fin...