Saving energy, protecting the climate, and upgrading recessed lighting is as simple as looking for the trusted blue ENERGY STAR label. Department of Energy, which funds the weatherization program. Early in 2000, the County began drafting new master weatherization contracts to replace the existing versions that were scheduled to expire. Planning for the new master contracts began in the early months of 2000, when the defendants began to revise the provisions of the old versions in order to "Rob proof" the new ones. In contrast to their § 1983 claim, the plaintiffs need not prove that retaliation against Obrist's expressive conduct was a substantial or motivating factor for their adverse actions in order to recover for tortious interference with contractual relations under Oregon law. The defendants contend that the plaintiffs cannot meet their burden of establishing that retaliation was a substantial or motivating factor in the defendants' actions because there is no evidence that Hansen, Swendsen, or their superiors had any knowledge of the expressive conduct against which they allegedly retaliated.