Not all headaches represent migraines, and migraine is not the only condition that can cause severe and debilitating headaches. For example, cluster headaches are very severe headaches that affect one side of the head in a recurrent manner (occurring in a cluster over time).
The United States government is the largest issuer of debt securities, and its bonds are considered the safest fixed-income investments available to your customer.
Debt of the United States. The United States public debt is the money borrowed by the federal government of the United States at any one time through the issue of securities by the Treasury and other federal government agencies. The US national public debt consists of two components: