Wayne Newton may call witnesses ranging from President Reagan to Lucille Ball in his fight against NBC. Newton and the network will be in a Los Angeles court in May to determine how much NBC owes him for defaming him in a broadcast that linked him to Vegas mobsters.

In preparation for the trial, the singer's lawyers submitted a list of potential witnesses that mentioned Reagan, his wife Nancy, Ball, Frank Sinatra, former Nevada Sen. Paul Laxalt, former Attorney General William French Smith and former Interior Secretary James Watt.Newton originally won a $19.3 million judgment in a 1986 trial in Las Vegas, but a judge knocked down the figure to $5.2 million and Newton eventually decided to exercise his right to another trial to set a final figure on the damages.