Diverting rangers is a way to direct federal resources to the border without the need for congressional approvalHelp us cover the critical issues of 2020. This Giving Tuesday, consider making a contributionMountain ridges in Zion national park, Utah. Photograph: Cheri Alguire/Getty Images/iStockphotoThe Trump administration is sending a new “surge” of rangers from US national parks such as Zion, Yosemite and the National Mall to patrol the southern border for crossings by illegal immigrants.