Yesterday, $13 billion in 20 year bonds were auctioned. A small auction compared to shorter term ones, which partly explains the good results. As long as the government keeps the long-term auctions small in size, they do well. If you tried to sell $50 billion of these, the interest rate would be much higher. In any event, the interest rate was lower than expected and demand was very strong. Again, you can find all the auction results here. (US Debt Auctions)