Presidential security

[Anita]

Why was Parker assigned to guard the President in the first place? His prior record of service with the police was abysmal. And why was he allowed to remain on the force after the assassination and there's no record of his trial. I think it all points to a police cover-up for assigning such a loser to guard the President.

Who was the Chief of Police and was he questioned? Who did the Chief of Police report to? Would it have reflected poorly on Stanton in any way? Where is Pinkerton in all this?

I agree with Betty that Booth would have gotten by him one way or the other. Parker arrived before the play started to wait for the Presidential party. Plenty of time for Booth to influence Parker.