Trump constitutes a clear break with past presidencies. Gallons of ink have been spilled on Trump’s controversial use of social networks. Attention has been paid to his incautious statements on both domestic and foreign policy, which seem to be dictated at the spur of the moment rather than after an attentive consideration of the possible consequences for the United States and the world as a whole. Yet, less attention has been devoted to the impact the Trump administration had on constitutional and administrative law doctrines, and to the most recent trends in the U.S. government policymaking under Trump. The present work fills the gap by providing a non partisan and comprehensive analysis of Trump’s first two years in office. The book is divided into two parts. The first part addresses the most recent trends in the US Government, by covering topics as varied as the relationship between the Presidency and Congress, states, federal agencies, the Supreme Court. The second part then moves to illustrate the most recent trends in policy making, by covering topics such as environmental law, fiscal policy, health care reform, and foreign policy.