Batman: Public Enemies

SupermanBatman Public Enemies is a 2009 original directtovideo animated superhero film adaptation of Public Enemiesthe opening story arc of DC Comics SupermanBatmanwhich focuses on Superman and Batman teaming up to prevent a meteorite from striking Earth and take down Lex Luthor, who has been elected President of the United States. The film is the sixth in the line of the DC Universe Animated Original Movies line released by Warner Premiere and Warner Bros. Animation. Voice actors from the DCAU reprised their roles, although it is not a DCAU production and is said not to be connected with that universe beyond sharing of voice actors.

The United States government discovers that a massive Kryptonite meteor is hurtling toward Earth. Instead of asking superheroes for aid and wanting to take credit for himself, Luthor decides to destroy it with nuclear missiles. Luthor arranges a meeting with Superman in Gotham City under the pretense of forming a pact. This results in a battle with the hired Metallo against Superman and Batman. Following the heroes escape, an unknown assailant kills Metallo.On national television later that night, Luthor pins Metallos murder on Superman, using footage of their battle to implicate him. Luthor claims that the radiation being emitted by the meteor can affect Supermans judgment, and he places a onebilliondollar bounty on the Man of Steel. ........

Source: Wikipedia