It’s been a boon for zoomers when they were looking to buy their first home. Now there’s a bid bid to have the Canada Mortgage and Housing Corporation end its backing of high risk home mortgages. The International Monetary Fund says Ottawa should consider phasing-out the federal insurance programme. The IMF says it exposes taxpayers, to financial system risks and might distort the market as a whole in favour of mortgages over more productive uses of capital. However, the IMF says any structural changes should be gradual to avoid unintended consequences.