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.
The national debt of the United States is the debt carried by the federal government of the United States. The public debt is measured as the value of the currently outstanding Treasury securities that have been issued by the Treasury and other federal government agencies.