(iii) A defendant shall be considered to have unlawfully remained in the United States if the defendant remained in the United States following a removal order issued after a conviction, regardless of whether the removal order was in response to the conviction.
(iv) Subsection (b)(1) does not apply to a conviction for an offense committed before the defendant was eighteen years of age unless such conviction is classified as an adult conviction under the laws of the jurisdiction in which the defendant was convicted.
(B) Definitions.—For purposes of subsection (b)(1):
(i) "Alien smuggling offense" has the meaning given that term in section 101(a)(43)(N) of the Immigration and Nationality Act (8 U.S.C. § 1101(a)(43)(N)).
(ii) "Child pornography offense" means (I) an offense described in 18 U.S.C. § 2251, § 2251A, § 2252, § 2252A, or § 2260; or (II) an offense under state or local law consisting of conduct that would have been an offense under any such section if the offense had occurred within the special maritime and territorial jurisdiction of the United States.
(iii) "Crime of violence" means any of the following: murder, manslaughter, kidnapping, aggravated assault, forcible sex offenses, statutory rape, sexual abuse of a minor, robbery, arson, extortion, extortionate extension of credit, burglary of a dwelling, or any offense under federal, state, or local law that has as an element the use, attempted use, or threatened use of physical force against the person of another.
(iv) "Drug trafficking offense" means an offense under federal, state, or local law that prohibits the manufacture, import, export, distribution, or dispensing of a controlled substance (or a counterfeit substance) or the possession of a controlled substance (or a counterfeit substance) with intent to manufacture, import, export, distribute, or dispense.
(v) "Firearms offense" means any of the following:
(I) An offense under federal, state, or local law that prohibits the importation, distribution, transportation, or trafficking of a firearm described in 18 U.S.C. § 921, or of an explosive material as defined in 18 U.S.C. § 841(c).
(II) An offense under federal, state, or local law that prohibits the possession of a firearm described in 26 U.S.C. § 5845(a), or of an explosive material as defined in 18 U.S.C. § 841(c).