The Department of State has issued the following notice in regards to the Democratic Republic of the Congo: (see original article here)
The U.S. Embassy in Kinshasa has been verbally informed by the Direction Generale de Migration in Kinshasa (Immigration Office) that a change in regulation will now require prospective adoptive parents to travel to the Democratic Republic of Congo to pick up their child in order to receive exit clearance. This change has not yet been confirmed in writing, which the U.S. Embassy has requested through formal diplomatic channels, nor have any other details been released.
Prospective adoptive parents are encouraged to work with their agencies regarding details of any planned travel to bring their children home. The U.S. Embassy in Kinshasa will post any new information that becomes available on adoption.state.gov.