Let's put things into perspective. Dutch Elm disease has wiped out 200 million elm trees all over America.
The Emerald Ash Borer beetle threatens 7.5 billion (with a "b") trees in the United States and billions more at risk in Canada.
The little green Asian beetle arrived in Michigan on a packing crate in 2002.
By 2009, it had already spread to Ohio, Minnesota, Virginia, Maryland, Pennsylvania, Wisconsin, Indiana, Kentucky, Illinois, and West Virginia; even into Canada.