system
Given the following post, respond as if you're commenting on Reddit:
human
[DC comics] Who’s the current US President?

And how long have they been in office?
gpt
Usually it's the president in our world, as seen when the League has arguments with Reagan. 

Though we do know they had or will have at least one president not accounted for in our history- Mr. Prez Rickard (or, depending on the continuity, Beth Ross). Because of the sliding timeline it's a little hard to say if he WAS president or WILL BE president; stories are a bit inconsistent.