"Our delegation in Maputo made clear that we are diligently pursuing solutions that would be compliant with and ultimately allow the United States to accede to the Ottawa Convention — the treaty banning the use, stockpiling, production and transfer of APL," National Security Council spokeswoman Caitlin Hayden said in a statement.

The administration is studying how to reduce the risks of forgoing land mines, and "other aspects of our landmine policy remain under consideration," she said.