Everything You Always Hated In X-Men
1. Nobody Notices Senator Kelly's Yellow Eyes
And finally, at the very end of the film we see TV footage of Senator Kelly rescinding his prior position on the Mutant Registration Act, with Storm pausing the TV just as Kelly's eyes turn yellow, confirming him to in fact be Mystique in disguise.
Except, if Storm noticed this, wouldn't members of the general public notice it too?
Now in fairness, your average punter doesn't know who Mystique is and wouldn't immediately realise precisely what's going on.
But with mutants being openly known in the world of the X-Men movies, it wouldn't take too much deductive reasoning for people to assume that the yellow eyes indicated a mutant hijacking of some kind, epsecially given the suddenness of Kelly reversing his stance on mutant registraiton.
If this sort of thing happened today, in a world where everything can be clipped out and posted to social media within seconds, Mystique's ruse would've been rumbled in record time. Even back in 2000, though, it surely should've turned some heads.