Agent Orange Victims Should Be Listed on the Memorial wall

My Father died on January 14, 2006. His name is Lewis C Henry Sr. He died due to complications of agent orange. His name is not listed on the wall because he didn't die during the war or while he was there. However, he started dieing when they sprayed this killer herbicide. We lost my father before he ever died. He died a long suffering death. Yet he is not recognized. Hundreds and hundreds of veterans die due to these complications. Why are we not recognizing all that they gave? Give them a wall....appreciate what they did......give them some kind of respect.