Andyt, why do you so rarely include links to your sources?
Your own quote says "combination of government mission and private ownership." It was privately owned, but government-created, government-backed, and government-directed. It is a mix of private and public elements, as I said, and never operated on a level playing field with truly private organizations. In 2008, the mix was altered to include more public elements, but there were some public elements all along.
President Franklin D. Roosevelt and Congress created Fannie Mae in 1938
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Fannie Mae grew so large over the years that in 1968 [...] President Lyndon Johnson took Fannie Mae's debt portfolio off the government balance sheet; Fannie Mae was converted into a publicly traded company owned by investors.
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loans backed by Freddie and Fannie carry an implicit government guarantee: the companies are so large that the government would never allow them to fail.
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Historically, conservatives have been Fannie and Freddie's most vocal critics, arguing that the companies' ties to government give them an unfair advantage over others in the industry.
The traditional party split over management of Fannie Mae is pretty clear.
By the way, Canada's system is a simple imitation of the pre-1968 American system -- the system Democratic President Lyndon Johnson ended and President George W. Bush restored.