Matter of Martinez, 25 I&N Dec. 845, 848 (BIA 2012) (a lawful permanent resident of the United States may be treated as an applicant for admission, pursuant to INA 101(a)(13)(C)(iii), 8 U.S.C. 1101(a)(13)(C)(iii), where the returning LPR engaged in illegal activity at a United States port of entry by attempting to bring an undocumented juvenile alien into the United States); citing Matter of Rivens, 25 I&N Dec. 623 (BIA 2011).