I'm meeting with the ALB Outreach Coordinator for the Mass Dept. of Ag. later today. I'll mention some of the points that have been brought up in this thread and post any information that may be helpful or that may dispel misconceptions.
Some info:
-There are other threats to the forests of NE besides ALB, many have been mentioned. Regarding Asian Long Horned Beetle (ALB) only:
In North America, it has been found in NY, NJ, Il, Ontario, and Massachusetts. The Illinois infestation was eradicated in 2008. Worcester and parts of some surrounding communities (recently added sm. part of Auburn) represent the larger population in Mass. 6 trees were also found with ALB in Boston (Jamaica Plain) of about 50,000 checked. Close to Arnold Arboretum, but still a small infestation. The insect will travel up to a mile, but that's rare; 1/2 mile is typical. This helps define the area being watched.
Once the infected wood has been chipped it will no longer support the ALB life cycle. Removal of the tree is the chosen treatment with replanting. Pesticide use sounds somewhat inefficient due to its inability to reach the part of the tree with ALB larvae.
Definitely sounds like it would be best to keep in check but it's not running rampant at the moment. The only areas it has been found so far are urban. The belief is they have come in from Asia in pallets, etc. to these cities. If ALB were to become established in the northern hardwood forest, it would have an unlimited food supply. And when insects eat alot, they multiply alot.
IMO it wood be best to take care of now while relatively easy to do, as ignoring it will not end up good however, I don't think we need all H to break loose to do it.
Reference and identification info:
http://www.mass.gov/agr/alb.htm
Hope this helps.