He was wounded in 2009 outside Baqubah, suffering a severe neck injury that hurts to this day.
Clay said seeing a wounded veteran accept a house is a wonderful thing.
"There are just a lot of our veterans that are severely wounded and they can't even make a living," he said. "They've fallen on difficult times.
"This foundation was put together to help address that."
Clay volunteers in such programs as a way of giving back to those who gave to their country.
"It just makes me feel so doggone good to help these veterans," he said with a smile.
Local and state dignitaries won't be the only ones attending Wednesday's event at Haddad.
The parents of Chris Kyle, a Navy SEAL and author of the New York Times bestseller "American Sniper" will also be on hand for the ceremony.
Kyle was called the country's most lethal sniper. He served in the Operation Iraqi Freedom and received Bronze and Silver Star medals.
He and a companion were shot and killed at the Rough Creek Lodge shooting range in Texas on Feb. 2 by a young veteran purportedly suffering from post-traumatic stress disorder. The shooter has been charged with murder.
Kyle's mother and father, Wayne and Deby, will be the honorary presenters of the home to the veteran.