I think they are taking various approaches. I was actually on one of their boats this summer. They were trying to fish down the invasion front. We were setting nets in the Illinois River, right at the upper end of the Illinois where the fish are found. Within an hour we caught two tons of Asian carp in our boat alone. There were five boats out there, so 10 tons of fish were caught that day. They had been doing that for two weeks straight, so they took out 50 tons.
The idea is to remove enough so that you actually change the population growth rate, and move the population into a decline. They are doing an analysis which shows they are doing that.
If we were faced with going beyond prevention and into rapid response, we could get an idea of the type of effort required to carry out that rapid response from what the Americas are doing.