Polly (a California resident) had the green light as she drove into the intersection (in Pomona). Don (also a California resident) carelessly ran the red light and collided with Polly, causing her $100,000 in damages. Poly was going 5 mph over the speed limit as she entered the intersection. The jury eventually determined that Polly was 3% to blame for the accident, and that Don was 97% to blame. Polly hired Art as her attorney, and she sued Don. She wanted to file the case with the U.S. District Court (federal court), if possible. ?

During the trial, Art asked Polly:"When you entered the intersection, you had the green light, didn't you?'' Later, on crosee-examination, Don't attorney asked Polly:" You readlly had the red light, didnt you?"

What is the issue, rule, application, and conclusion? What laws related to this case? Does it possible if Polly wanted to file the case with the U.S. District Court.