You know that government marijuana has extremely low THC levels right? At around 2-3%....

They have to list all the data when performing an experiment and THC dosage is an important part of the experiment. Some breeder probably made a high THC content strain and named it G-13 to sell more plants. And as for MK-Ultra... Wasn't that the name for the CIA's experiments with LSD and other drugs for use in warfare?