When you hear the names Fannie Mae and Freddie Mac or the term mortgage-backed securities, you donโ€™t get a warm and fuzzy feeling, do you? Peace of mind and comfort donโ€™t roll off of the tongue either. But some mortgage-backed securities do make sense. So what separates fish from fowl? Four letters: GNMA.

โ€œGNMA is the only mortgage-backed security that enjoys the full faith and credit of the United States Government,โ€ reads the website. As you can see on the chart below, the spread between yields on 30-year GNMA mortgages and 30-year Fannie Mae mortgages averages about 8 basis points, or 0.08%. But the GNMA mortgages are explicitly backed by the full faith and credit of the U.S. government. You should check out the website to learn more, but Iโ€™ll leave you with this little tidbit: โ€œGinnie Mae does not buy or sell loans or issue mortgage-backed securities (MBS). Therefore, Ginnie Maeโ€™s balance sheet doesnโ€™t use derivatives to hedge or carry long term debt.โ€