Why changing haircut to Mohawk especially if he intended to kill senator, it would bring unnecessary attention.

Why not shooting hotel guy right in the beginning and taking so long time to do it?

Is it really that long time from those rallies to nomination, because he has clearly at least 5-6 cm long hair again indicating it's at least half year later.

Why was he riding such old car, how taxi company deciding who will get new and who old car at that time?