; and (2) by adding at the end the following: (5) In the case of a person who has brought aliens into the United States in violation of this subsection, the sentence otherwise provided for may be increased by up to 10 years if that person, at the time of the offense, used or carried a firearm or who, in furtherance of any such crime, possessed a firearm. . (b) Aiding or assisting certain aliens To enter the United States Section 277 of the Immigration and Nationality Act ( 8 U.S.C. 1327 ) is amended— (1) by inserting after knowingly aids or assists the following: or attempts to aid or assist ; and (2) by adding at the end the following: In the case of a person convicted of an offense under this section, the sentence otherwise provided for may be increased by up to 10 years if that person, at the time of the offense, used or carried a firearm or who, in furtherance of any such crime, possessed a firearm. . (c) Destruction of United States border controls Section 1361 of title 18, United States Code, is amended— (1) by striking If the damage and inserting the following: (1) Except as otherwise provided in this section, if the damage