Other mistake: There is a scene where Joe is shown taking a bullet for then-President Carter. We then see Darian visiting Joe in the hospital after the shooting, holding a picture that she drew for him. Darian looks to be about 6 or 7 years old, yet this film takes place in 1991, Carter left office in 1981, and she is supposed to be 13 in the movie. If she was 6 or 7 when Carter was in office, she would be 16/17 by 1991. (01:02:55)
Other mistake: Joe fires lots of shots from his gun at the car in the swimming pool, he then soon after threatens to shoot his daughter with the pistol pressed up against her head. This wouldn't have been possible without burning her from the heat at the end of the barrel, but there's not a mark on her afterwards. (01:19:20)
Answer: You're right, I reviewed the clip. You see Joe holding the briefcase and Jimmy run out of the rich man's house, then get directly into his car. At no time do you see him putting the briefcase anywhere. It's most likely a bad editing job.