I testified before the House Science Committee on 29 March 2017. In my testimony I asked members of Congress to call a bipartisan truce in attacking scientists whose work they find inconvenient. I also emphasized the importance of scientific assessments such as the IPCC.
You can see the whole hearing above and read my testimony from the link below.
Statement by Roger Pielke Jr. before the House Committee on Science, Space, and Technology US House of Representatives, Hearing on Climate Science: Assumptions, Policy Implications, and the Scientific Method, 29 March (PDF).