From Judge Andrew Napolitano's Facebook page:
The courage and valor of the American soldiers, sailors, airmen, and marines is admirable -- the purpose of their missions, unfortunately, is not.
"National defense" means protecting the territory of the United States from foreign aggressors, such as Mexican drug lords.
Wherever the standard of freedom and Independence has been or shall be unfurled, there will her heart, her benedictions and her prayers be.
But she goes not abroad, in search of monsters to destroy.
She is the well-wisher to the freedom and independence of all.
She is the champion and vindicator only of her own.
- John Quincy Adams, Independence Day speech to the U.S. House of Representatives, July 4, 1821