The Fannie Mae and Freddie Mac saga has been going on for, depending how you count, 16 years, or perhaps many decades. There are strong feelings and a lot of lore. It’s back in the news now, and I thought it might be nice to start with the basics.In the US, as a matter of policy for many decades now, the federal government wants it to be relatively easy to buy a house. Most people do not have enough money to buy a house, so this policy mostly means that the government wants someone to lend buyer...