Immigration and Customs Enforcement (ICE) officers were spotted scanning passenger IDs at the end of a long security line at New York’s LaGuardia Airport on Thursday.   Two of the three ICE officers The Post observed working the Transportation and Security Administration (TSA) checkpoint in Terminal B were sporting “Enforcement and Removal Operations” patches, signifying they are part of the agency’s deportation unit.  “ICE is running the security!” one incredulous traveler was heard remarking