The Commission on Evidence-Based Policymaking website will be available until July 1, 2018. 

There's a link to the Evidence-Based Policymaking Initiative of the Bipartisan Policy Center.

https://www.youtube.com/watch?v=E3e4D2bHxa8
https://youtu.be/eHXRnFCNdeQ
https://youtu.be/zxfWwL1_pb0
https://youtu.be/R-4jQ5ePi7o