it became known that there were an additional 20,000 documents Bentley was cited by a rare contempt motion by a legislative committee and was facing a contempt motion of the Legislature when McGuinty unexpectedly announced on October 15, 2012, that he was ending the legislative session by proroguing the legislature and that he would resign as premier as soon as the Liberal Party chose his successor, in January 2013. Liberal House Leader John Milloy later stated that prorogation was necessary because an impasse was reached with labour leaders and the opposition over plans to freeze all public sector wages. The opposition charged that it was done to dodge negative publicity over the investigation and criminal probe into the Ornge Air affair, the controversial decision to halt construction of two gas-fired power plants during the previous election, and the subsequent threats by the opposition to vote on finding Cabinet ministers in Contempt of Parliament for withholding from the Legislature information related to halting the projects. In early 2013, Onley explained in an interview conducted by the Toronto Star that, though he and McGuinty discussed the matter, among others, before he granted the prorogation, he could only follow the constitution and adhere to the principles of responsible government; only if the premier were "trying to subvert democracy" could Onley have refused the advice and, as Onley put it, "something that's politically controversial doesn't fit that category. Doesn't even come close.... It's up to the politicians to work out the political process, the political decision-making that is behind prorogation—and the fallout after prorogation." On the subject of the lack of a date on which the Legislature would be summoned to return, the Lieutenant-Governor said he had no guide; the Legislature's standing orders outline that a specific date must be set, but the Legislative Assembly Act does not, and precedents are inconsistent. While there had been speculation that McGuinty would become a candidate for the federal Liberal leadership election, on October 23, 2012, he announced that he would not be doing so. McGuinty resigned from his premiership on February 11, 2013. He resigned his seat in the legislature on June 12, 2013, at the end of the legislative session, after representing Ottawa South for 23 years. Life after politics In June 2013, McGuinty was named a senior fellow for the fall semester at Harvard University's Weatherhead Center for International Affairs. McGuinty published a memoir