Millis eliminated the Review Division's decisive role in cases, which had been established under Madden and Witt. Madden and Witt had adopted a highly centralized Board structure so that (generally speaking) only the cases most favorable to the board made it to the courts. The centralized structure meant that only the strongest cases made it to national board, so that the board could apply all its economic and legal powers to crafting the best decision possible. This strategy enabled the NLRB to defend itself very well before the Supreme Court. But Madden and Witt had held on to the centralized strategy too long, and made political enemies in the process. Millis substituted a decentralized process in which the board was less a decision-maker and more a provider of services to the regions. Many of the changes Millis instituted were designed to mimic requirements placed on other agencies by the Administrative Procedure Act.