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.
Foreign governments hold about 46% of all U.S. debt held by the public, more than $4.5 trillion. According to the Treasury, the largest foreign holder of U.S. debt is China, which owns more than $1.24 trillion in bills, notes, and bonds or about 30% of the over $4 trillion in Treasury bills, notes, and bonds held by foreign countries. In total, China owns about 10% of publicly held U.S. debt.