… Since 1964, the Columbia River Treaty has required Canada to control the flow of the river, via dams, to meet U.S. needs for hydropower and flood prevention — in exchange for half the proceeds from the power generation downstream. Provisions expired in September. A three-year interim agreement is in place to allow continued operations of flood control and some components of a new agreement, but the renegotiated, modernized treaty isn’t finalized and is expected to stall longer under the new U.S. administration. … (S)ome observers are now wanting to see it scrapped, arguing that with the shifting cross-border relationship, the stakes have changed.