The Fifth Circuit's interesting hard-to-categorize reasonableness opinion

An insightful reader noticed that, in my recent update of circuit reasonableness decisions, I did not add the Fifth Circuit's decision in US v. Tzep-Mejia (first discussed here).  I left this intriguing decision off my list primarily because Tzep-Mejia affirmed a sentence in which the district court thoughtfully refused to calculate a definitive guideline range. 

Though I am not sure how to categorize Tzep-Mejia, I am sure that the Fifth Circuit's approval of the imposition of a sentence between two possible ranges is worthy of attention.  Thus, I am happy to have this second post about Tzep-Mejia, and also pleased to see the Fifth Circuit Blog give the case an extensive review here.