March 7, 2017: John Kelly ,confirms a report that the administration is considering separating families at the border
October 2017: Separations begin no later than October
May 11: Kelly, who became White House Chief of Staff in July, defends the separation of undocumented immigrants from their children
June 18: Nielsen says the administration "will not apologize" for separating families. "We have to do our job. We will not apologize for doing our job," she says. "This administration has a simple message — If you cross the border illegally, we will prosecute you."
June 20: Facing a national outcry, Trump signs an executive order designed to keep migrant families together at the U.S.-Mexico border, abandoning his earlier claim that the crisis was caused by an iron-clad law and not a policy that he could reverse
A USA TODAY analysis of thousands of cases, reveals the Trump administration border crackdown that separated thousands of children from their parents