From the White House:
Today, President Obama is directing a comprehensive review to strengthen the United States’ ability to prevent mass atrocities.
The President’s directive creates an important new tool in this effort, establishing a standing interagency Atrocities Prevention Board with the authority to develop prevention strategies and to ensure that concerns are elevated for senior decision-making so that we are better able to work with our allies and partners to be responsive to early warning signs and prevent potential atrocities. Today he is also issuing a proclamation that, for the first time, explicitly bars entry into the United States of persons who organize or participate in war crimes, crimes against humanity, and serious violations of human rights.
Read it all. H/T Religious Clause [this link will go live Friday].