OK, maybe this is a bit of an exageration. However, it seems that it is getting to the point that anytime that a "Survivalist" or "Group" or "Tax Resistor" is in under suspicion they find a reason to call in the Feds. Here they have "reports" of firearms and tunnels filled with explosives, but did not find anything. http://wfrv.com/topstories/local_story_073161727.html
It's not that they were afraid of the old man, they just wanted to grandstand for the media. 15 minutes of fame for that sheriff or prosecutor could be enough publicity to get them elected DA or to the Wisconsin House or outhouse. The Dimmocrats are in power, so it's time to get noticed.