Tensions are bubbling up at thirsty Arizona alfalfa farms as foreign firms exploit unregulated water

Actual answer, Corrupt politicians made a deal with them to allow unregulated usage of water. The Arizona desert isn’t the Sahara, things grow. Lots of sun, fertile soil. The problem is evaporation! If you can keep it moist, it will grow like crazy.

Answers 1. They are stupid 2. Profit.