PG-13 | | Animation, Action, Adventure
The President of the United States in this film is a woman named Joan Dale. Joan Dale is also the name of a Quality Comics World War II era superhero known as "Miss America". DC later acquired the rights to many Quality Comics characters, including Miss America and later retro conned her into World War II era Justice Society and All Star Squadron comic stories (Sometimes functioning as a Wonder Woman analogue.)
Oh! It's you.
Superman: Lex Luthor. As I live and breathe.
Lex Luthor: Yeah, what's that about?
There is a final scene after the end credits that sets up a sequel.