This week legislature of the State of Washington passed Senate Bill 6206 which authorizes Washington State University to research industrial hemp and the potential market for legalization. WSU is to report back to the State legislature in 2017. The bill is headed to Governor Jay Inslee's desk where he is expected to sign.
SB 206 moved quickly through the State Legislature. You can find the full bill as passed here. The Bill provides the framework on the study to be conducted and defines "Industrial Hemp" as cannabis that contains a THC concentration of 0.3% or less by dry weight.
It appears that the Washington will continue is proactive approach to regulating Cannabis; that now will presumably include the institutional study of industrial Hemp.
However, the potential grounds for Tribes within the State of Washington to work in cooperation with the State in the industrial hemp market remains unclear as Tribes are not contemplated by the bill. Nevertheless, given the Washington's proactive compacting position with Tribes on marijuana there is room for Tribes to be optimistic that a similar approach will be contemplated on Industrial Hemp.