HERNANDEZ-PUENTE

the Board and immigration judges are without authority to apply equitable estoppel against now-DHS to preclude it from taking a lawful course of action it is authorized to take by statute or regulation

stating that the Board and the Immigration Judges are without authority to apply equitable estoppel to preclude the Government from pursuing a lawful course of action

holding that, despite INS mistakes resulting in the failure of petitioner to obtain visa, the INS has no authority to grant adjustment of status nunc pro tunc

determining that BIA has no jurisdiction to review a decision to deny adjustment of status, or to review a failure to act on an application for adjustment of status

recognizing our authority to enforce an alien’s procedural rights through deter- minations affecting deportability, discretionary relief, or other benefits under the Act