The mayors of Calgary, Edmonton, Ottawa, Toronto and Vancouver released a letter today calling for increased revenue powers. According to the Mayors,

For too long, city governments have been required to rely on property taxes alone to support our growing operating budgets, with dollars stretched thinner and thinner as we serve the growing needs of the public. At the same time, our transit systems, roads and vital infrastructure are suffering from decades of underinvestment.

See below for the full letter: