The court of appeals reversed a judgment of the district court in part, vacated in part and remanded. The court vacated denial of an incarcerated individual’s motion to dismiss for improper venue, holding the district court erred in failing to permit him to rebut the presumption that he retained residence in the judicial district in which he lived prior to incarceration for purposes of venue under the denaturalization statute.

Fernando Arango, a native of Colombia, was naturalized as a United States citizen in 1989. Twenty years later, the government filed suit in the District of Arizona to strip him of his citizenship. The complaint alleged that Arango had unlawfully procured his citizenship and misrepresented and concealed facts during the naturalization process.