The Obama administration was remarkably successful in mitigating intraparty conflict while moving forward with major rulemakings. When challenged in court, many of these rules were upheld, and have proven difficult to reverse, because they were supported by rigorous analysis. Over the course of its eight years, the administration pursued rulemakings on a large number of subjects. Political considerations and the demands of party constituencies no doubt influenced the direction of policy, but so too did evidence, analysis, and expertise, in keeping with the practices of prior administrations. President Obama and senior officials showed considerable respect for the system of governance that they inherited, with its established methods for incorporating analysis and evidence into regulatory decision making. Their personal policy preferences and perspectives were tempered by these long-standing practices, which ultimately led to better decision making.