Answer:
Corps regulators now send threatening letters to farmers who switch from one crop to another, such as rice to orchards, or perform routine plowing.
Step-by-step explanation:
The Corps says the farmers can be performing a “land-use” change that suddenly puts a farm under Corps jurisdiction. It is getting harder and harder, and in legal terms more dangerous, to be an American farmer these days, thanks to the aggressive behavior of the federal Environmental Protection Agency (EPA) and the U.S. Army Corps of Engineers. Increasingly, those regulations are changing at the arbitrary say-so of the Corps regulators who implement the EPA’s regulations on the ground, even though most practices followed by American farmers have been exempted from CWA prohibitions since it was written in 1977.