In the summer of 2003, EAB-infested nursery stock from Michigan was illegally sold to a nursery in Prince George, Maryland and sold throughout the state and in Fairfax County, Virginia. State and federal agencies tracked down most of these ash trees, followed eradication guidelines, and now monitor these sites for EAB. The public can also help by looking for EAB symptoms in ash trees growing in their communities.
For helpful photos of EAB and infested trees:
http://www.michigan.gov/mda/0,1607,7-125-1568_2390_18298-65300--,00.html
Native distribution of EAB in Asia includes several provinces of China (Liaoning, Jilin, Heilingjiang, Inner Mongolia, Hebei, and Shandong), Korea, Japan, Taiwan, and a small portion of adjacent Russia and Mongolia.