DHS Secretary Kirstjen Nielsen speaks at a Capital Hill National Security Forum

DHS Secretary Kirstjen Nielsen speaks at a Capital Hill National Security Forum

US Department of Homeland Security Kirstjen Nielsen speaks at a National Security Forum on June 21, 2018 on Capital Hill in Washington, D.C. Nielsen has come under fire for her role enforcing the White House's "zero tolerance" immigration policy, which has resulted in the child separations from their families. Photo by Tasos Katopodis/UPI

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