Following his career in politics, Miller briefly returned to law before serving as president and CEO of the World Wildlife Fund Canada (WWF-Canada) from 2013 to 2017, after which he began working as the director of international diplomacy at C40 Cities Climate Leadership Group.

[8] Miller campaigned for the Metro Toronto Council a second time in 1994, and was elected for the High Park ward over former Member of Parliament Andrew Witer and future Cabinet minister Tony Clement.

[15] Miller issued a formal apology on behalf of the TTC in June 1999, following complaints about a subway advertisement by the Toronto police union that some believed depicted Hispanics as criminals.

Miller strongly opposed a plan by Mayor Mel Lastman to ship the city's garbage to the Adams Mine in Northern Ontario, which was ultimately voted down by council.

[23] Miller won the unanimous support of his colleagues in July 2001 for a motion requesting that the federal government approve the transfer of gasoline-tax revenues to Toronto's public transit system.

[24] He later suggested that Toronto's building revenues could be put toward priority spending rather than being stored in reserve accounts, arguing that the city's real estate boom would allow council to defer transit hikes and provide programs for children and the homeless.

He pledged to cancel the airport bridge, appoint a municipal ethics commissioner, and promote public transit by fully implementing the TTC's ridership growth plan.

He supported a police request to hire thirty-two new officers, and opposed rival candidate John Tory's plans for trash incineration in favour of continuing garbage shipments to Michigan.

At the start of the campaign in early 2003, Barbara Hall led by a wide margin, with John Nunziata a distant second, while Miller and Tory initially had support in single digits.

[44] There were subsequent threats of legal action against the City by the Toronto Port Authority (TPA) and developer Robert Deluce, but these were settled in 2005 when the federal government agreed to pay $35 million in compensation.

[47] In early 2006, Robert Deluce announced the creation of a company called Porter Airlines that would start a commuter service at the Island Airport, with the planes built at Bombardier's Downsview plant.

Miller described himself as "cautiously optimistic", although he later found it "very regrettable and very worrying" that federal Transport Minister Lawrence Cannon appointed five members of the Port Authority executive before the report was complete.

[55] When the Tassé Report was released in November 2006, it defended the Port Authority's decision to sign a bridge contract just before the 2003 election, and described the $35 million payout to DeLuce as "reasonable".

Miller dismissed the document as "not worth the paper it is written on", while MP Olivia Chow referred to it as a "total whitewash" and accused the Conservative government of doing a "complete about face" on the issue.

[66] During the late stages of negotiations, provincial Municipal Affairs Minister John Gerretsen suggested that the city could make up for its budgetary shortfall by raising property taxes above 3 per cent.

Miller and TTC chair Howard Moscoe have argued that the Bombardier contract was awarded fairly, and that it will provide the city with both affordable subway cars and local parts-supply employment.

[120] In November 2006, Miller stood with Prime Minister Stephen Harper and Premier Dalton McGuinty to announce tougher bail conditions for persons accused of gun crimes.

One published report suggests that Ralph Lean, a leading Miller fundraiser, played an instrumental role in ending the dispute through private negotiations with former association head Craig Bromell.

[145] Miller also called upon Toronto's business leaders to target street crime by providing jobs for unemployed youth; one year later, he was able to report increased hirings in both the public and private sectors.

Miller explained that he made the comment in order to introduce the scandal to his guest, following an awkward press scrum which the Lord Mayor walked away from after several questions about the local controversy.

A poll taken by Ipsos-Reid in October 2005 showed that the mayor, council, police and judges all received low to middling grades from the Toronto public in their handling of increased gang activity.

[176] Miller brought forward a series of measures to provide shelter and warmth for Toronto's homeless population during the winter months in 2004, including a decision to set up an emergency centre before Christmas.

[195] Miller convened a meeting of Canada's major urban mayors in January 2004, and argued at the summit that Canadian cities needed enhanced powers of governance to deal with a variety modern challenges.

[198] Miller did not support any party in the 2004 federal election, endorsing four individual candidates: New Democrats Peggy Nash and Olivia Chow, and Liberals John Godfrey and Borys Wrzesnewskyj.

[199] In 2005, when federal Social Development Minister Ken Dryden was planning a national childcare strategy, Miller spoke in favour of a system based around public delivery.

Miller supported the appointment of Lawrence Cannon as Minister for Communities in February 2006, and tried without success to persuade the Harper government against eliminating Canada's national child-care plan.

To put pressure on the Harper government to come up with its one-third share of the cost, Miller and Premier Dalton McGuinty made an announcement in Thunder Bay to fund the new streetcars.

[218] Critics of the one cent campaign said that it was losing support, citing declining petition signatures and no federal politicians on side, and suggested that residents have become desensitized to Miller's frequent calls for outside funding to fix the city's problems.

He supported the province's anti-poverty initiatives, but also argued that it was refusing to "pay its bills", and said that Toronto's budgetary problems were the result of $500 million in social service costs mandated by the provincial government.

[265] In his campaign platform, released November 1, 2006, Miller promised 4,000 units of affordable housing, a mandatory lobbyist registry, and a further expansion of the green bin program into apartments and condominiums.