Read this news article from 26 April 2013 and watch the accompanying news report.
http://www.bbc.co.uk/news/world-us-canada-22115507
Then imagine you are a scientist working on how to control this pest. You should produce an information leaflet for American farmers detailing:
1. What the problem is
2. Options for control with their advantages and disadvantages
3. Questions that researchers still need to find out