 The BIA affirmed the IJ's decision.Under the well known "Chevron" doctrine, the Second Circuit, in an eight paragraph legal argument, deferred to the BIA's reasoning that Luna's 1999 state conviction was categorically an aggravated felony because it is described by § 844(i) element-by-element.In other words, a "single day" of imprisonment is categorically the same as "5 years" of imprisonment.