The problem with Public Enemies was always that it wasted its potential. Lex Luthor as President of the United States? With the influence to oppose Superman like never before? In a position to prove himself as the prime human being? And a situation where you can explore both his character and Superman's when faced with potentially common threats which don't necessarily make them allies, or situations where one can't oppose the other despite having to, or maybe when one of them ends up being right and the other wrong? It has to be one of the best premises DC ever had to work with. Instead it's turned into a strange plot with a meteorite and Lex is reduced to injecting kryptonite into himself and getting crazy. Oh well. Not surprising considering it was written by Jeph Loeb.