In the latest sign of the immigration crisis along the southern border, the border patrol “recorded” 2.1 million illegal entries over just two years, according to a new GAO report on the problems of old fencing and benefits of new walls.

“In fiscal years 2013 through 2015, U.S. Border Patrol, within the Department of Homeland Security’s U.S. Customs and Border Protection, recorded a total of 2.1 million estimated known illegal entries between ports of entry along the southwest border,” said the new report from the Government Accountability Office.