Diop v. DHS, 656 F.3d 221 (3d Cir. Sept. 1, 2011) (the mandatory detention provision at INA 236(c), 8 U.S.C. 1226(c), implicitly authorizes detention for a reasonable amount of time, after which the authorities must make an individualized inquiry into whether detention is still necessary to fulfill the statute's purposes of ensuring that an alien attends removal proceedings and that his release will not pose a danger to the community.).