Task: Text Categorization
Input (English): siewe v. gonzales, 480 f.3d 160, 170 (2d cir. 2007) (""[a] single false document or a single instance of false testimony may (if attributable to the petitioner) infect the balance of the alien's uncorroborated or unauthenticated evidence."").
Output (English): non-overruling