The National Football League asked Russ Feingold to remove a new television ad he released Tuesday that uses unauthorized video.
""We did not license the footage and have contacted the Senator's campaign about removing it,"" said NFL spokesman Brian McCarthy in an e-mail.
The ad, titled ""Number One,"" features multiple clips of football players celebrating in the end zone. However, the only clip that uses NFL game footage features former Minnesota Vikings wide receiver Randy Moss pretending to moon Green Bay Packers fans during a game from January 2005.
The NFL brought this to their attention, and the Feingold campaign agreed to alter the ad. ""We are making an edit to the ad to accommodate the NFL's concern,"" said campaign spokesman John Kraus in an e-mail.
In the ad, Feingold compared the celebration footage to how Republican Senatorial candidate Ron Johnson is prematurely declaring a victory in the November election.
""Senator Feingold's mask is off,"" the Johnson campaign said in a statement. ""He's raking in hundreds of thousands of dollars from radical liberal groups like MoveOn.org and is using NFL licensed footage without permission in his latest attack ad.""