Politico is reporting that federal chief performance officer Jeffrey Zeints will be the acting director of the Office of Management and Budget until Peter Orszag’s replacement, Jack Lew, is confirmed by the Senate. Rob Nabors, a former Orszag deputy who has been serving as senior adviser to President Obama’s chief of staff, Rahm Emanuel, will return to OMB as acting deputy directo, Politico reports. When Lew is able to take over, he’ll face a tough road trying to advance the administration’s budget-cutting efforts, as my colleague Steve Losey reported recently.