Record contained sufficient evidence to support Bd.’s denials of alien’s applications for asylum and withholding of removal, where alien had provided material support to Eritrean People’s Liberation Front (EPLF), which Bd. could properly classify as Tier III terrorist organization. While alien argued that Bd. should have found him eligible for “knowledge exemption” to material support for terrorism bar because he did not know that EPLF was involved in unlawful use of force at time he was supporting said organization, alien could not pursue said issue on appeal because he had failed to specifically raise said issue before Bd. Ct. also rejected alien’s claim that certain procedures for adjudicating terrorism bar waivers are legally flawed since they allow for Bd. to issue final removal order prior to DHS determination of his request for said waiver.