I want to know the answer to the following question:
What has the U.S Department of Agriculture done to help watch for the snakes?
All the background I'm provided with is that "Believed to be a stowaway on a U.S. military transport near the end of World War II, the brown tree snake (Boiga irregularis) was accidentally introduced to Guam, that previously had no native species of snake.". Is that enough to answer the question?
Answer: no