Companies, scrambling to identify “conflict minerals” from the Democratic Republic of the Congo that may enter their supply chains, now have even more to worry about. President Obama this week set the stage for expanded sanctions against the militia-ravaged region.

A new Executive Order, amending what was issued in 2006, expands sanctions criteria so they conform more closely to United Nations resolutions. Among the new criteria that will be used is the addition of individuals and groups tied to militias involved in the illicit trade of natural resources from the region.