Along with the same year's Olympus Has Fallen (qv), it's a Die Hard in the White House action movie with the US president being protected by a sole Secret Service Agent vs several bad guys.
Both movies are as bad (or good ) as each other in all honesty, but this one wins points for having a more flamboyant double act in the form of Channing Tatum & Jamie Foxx rather than Gerard Butler & Aaron Eckhart (who are both given poorly structured and underwritten characters in Olympus Has Fallen). Still, this action movie subgenre was done to death in the 1990's so, no matter the setting, it still feels incredibly stale nowadays.
There are some huge irritants in this film, especially Roland Emmerich making smug references to his previous movies and all the ridiculous product placement (Jamie Foxx's US president wearing Nike Air Jordans. Really.)
It's one of them films where it's best to remove your brain before watching (or at least have lots of beer at the ready).