N-f-l commissioner Roger Goodell asks lawmakers for legislation to help shore up the league's anti-doping policies.A Series of recent court rulings overturned the n-f-l's suspension of several players who tested positive for banned substances.The rulings sided with players who claimed they did not know the weight loss supplements they were taking contained a banned substance.Goodell told congress without federal legislation ... The court rulings will nullify professional sports' anti-doping policies.The players union is opposed to federal legislation