OPINION OF THE COURT

Petitioner Santiago Fernandez-Vergara, a citizen of Peru, seeks review of the order of the Board of Immigration Appeals (“BIA”) summarily affirming an immigration judge’s denial of his applications for asylum under 8 U.S.C. § 1158(a) and for withholding of deportation under 8 U.S.C. § 1231(b)(3).

Petitioner argues that his eligibility should be measured by conditions as they existed in Peru when he filed his asylum application in 1993 and not in 2001 when his hearing took place. Petitioner cites no authority for this proposition and we are aware of none. The immigration judge’s conclusions that conditions in Peru had changed for the better and that the applications should be denied were supported by substantial evidence. Petitioner’s related argument — that delay in providing a hearing should estop the government — is similarly misplaced. That the government erroneously sent several letters to Petitioner’s old address is not affirmative misconduct and does not estop enforcement of the immigration laws. INS v. Miranda, 459 U.S. 14, 18, 103 S.Ct. 281, 74 L.Ed.2d 12 (1982).

Petitioner also attacks the BIA’s summary affirmance procedures as violative of due process. This argument has been foreclosed by Dia v. Ashcroft, 353 F.3d 228 (3d Cir. 2003), where we concluded that “the streamlining regulations do not vio *928 late the Due Process Clause of the Constitution.” Id. at 238.

As Petitioner’s remaining arguments are without merit, the petition for review will be DISMISSED.