He has been accused of illegally trafficking drugs in Wa State (an unrecognized state in Myanmar), in the US, and through Myanmar's border with China.Following the 2015 jade mine disaster in Hpakant, Kachin State, Wei Hsueh-kang was accused of exploiting locals and illegally funding mining operations in the area.
This claim however, could not be verified or denied by Wei himself, as he was still in hiding.