https://www.defenseone.com/ideas/2018/08/how-trump-radicalized-ice/150303/

“Then came the election of Donald Trump. Suddenly, in the warehouses where many of the Mauritanians worked, white colleagues took them aside and warned them that their lives were likely to get worse. The early days of the administration gave substance to these cautions. The first thing to change was the frequency of their summonses to ICE. During the Obama administration, many of the Mauritanians had been required to “check in” about once a year. Abruptly, ICE instructed them to appear more often, some of them every month. ICE officers began visiting their homes on occasion. Like the cable company, they would provide a six-hour window during which to expect a visit—a requirement that meant days off from work and disrupted life routines. The Mauritanians say that when they met with ICE, they were told the U.S. had finally persuaded their government to readmit them—a small part of a global push by the State Department to remove any diplomatic obstacles to deportation.

Fear is a contagion that spreads quickly. One ICE officer warned some Mauritanians sympathetically, “It’s not a matter of if you’ll be deported, but when.” Another flatly said, “My job is to get you to leave this country.” At meetings, officers would insist that the immigrants go to the Mauritanian consulate and apply for passports to return to the very country whose government had attempted to murder them.”