President Barack Obama signs the Farm Bill into law, allowing research institutions to start piloting hemp farming programs. The Farm Bill legally separates hemp from marijuana and legalizes the cultivation of industrial hemp, defining industrial hemp as cannabis sativa L. plants 0.3 percent concentration of THC or less (the intoxicating cannabinoid). This link will take you to the full details.
From <Text – H.R.2642 – 113th Congress (2013-2014): Agricultural Act of 2014 | | Library of Congress/>