Felipe Solorzano-Giron (Solorzano) petitions for review of the decision of the Board of Immigration Appeals (BIA) affirming the decision of the immigration judge denying his application for asylum. As Solorzano has not challenged the denial of his request for withholding of removal, any such challenge is abandoned. See Rodriguez v. INS, 9 F.3d 408, 414 n. 15 (5th Cir. 1993).

Solorzano argues that, as a member and leader of a labor union formed to collect past wages from his employer, Transpac Central America, he is a member of a “particular social group” for purposes of an application for asylum. He also argues that the BIA erroneously foreclosed him from refugee status due to his failure to turn to Guatemalan authorities for protection from Transpac’s death threats.

Substantial evidence supports the BIA’s finding that Solorzano was not a refugee. See 8 U.S.C. § 1101(a)(42)(A); 8 U.S.C. § 1158(b); Mwembie v. Gonzales, 443 F.3d 405, 414-15 (5th Cir. 2006); Majd v. Gonzales, 446 F.3d 590, 595 (5th Cir. 2006); Chen v. Gonzales, 470 F.3d 1131, 1134 (5th Cir. 2006); Mikhael v. INS, 115 F.3d 299, 302 (5th Cir. 1997); see also In re A-M-E & J-G-U, 24 I. & N. Dec. 69 (BIA 2007). We therefore do not address Solorzano’s second argument.

PETITION DENIED.