On April 4, 2014, the U.S. Department of the Interior, U.S. Fish & Wildlife Service, suspended the import of elephant trophies from Zimbabwe, Africa through the end of 2014.

Imports from Tanzania, Africa are suspended through the end of 2015.

On March 26, 2014, the Zimbabwe suspension was extended through the end of 2015.

The U.S. Fish & Wildlife Service makes a decision to suspend imports if it can't determine that "...the killing of the animal whose trophy is intended for import would enhance the survival of the species in the wild."

Source:

(March 26, 2015). "Enhancement Finding for African Elephants Take as Sport-Hunted Trophies in Zimbabwe On or After January 1, 2015". Department of the Interior, U.S. Fish & Wildlife Service. Retrieved 2015-10-26.

More:

• Poachers Poison Elephants in Zimbabwe National Parks | Health and Wellness Resource
• Import of Elephant Trophies from Tanzania & Zimbabwe | fws.gov
• Controversy Swirls Around the Recent U.S. Suspension of Sport-Hunted Elephant Trophies | National Geographic