He said the mapping involves “a lot of money and a certain persistence.” Because of that, it’s difficult to make that a priority in other counties, he said.

Christopherson said one of the reasons the map began was so families could try and track down their missing loved ones, which is easier to do when the remains are able to be identified. Out of 2,731 total remains found as of January of this year, Christopherson said 947 remains were unidentified.

Molina said migration has been down on all counts in general, but she refutes the notion that this is related to the election of Donald Trump. She said Former U.S. Secretary of Homeland Security Jeh Johnson took many measures to “stop migration before it reached the United States,” and that we’re now seeing the effects of his actions.

She said the number of people crossing fluctuates often, particularly with the changing seasons. But there are other trends have been documented since the map project began.