United States immigration officials arrested hundreds of undocumented residents in a series of raids conducted across at least six states this week.It was the first major crackdown on the estimated 11 million undocumented immigrants residing in the U.S. since President Donald trump signed an executive order on Jan. 25 vowing to ramp up immigration enforcement activity and improve security along the U.S. Mexico border.U.S. Immigration and Customs Enforcement (ICE) Agents carried out raids this week in Atlanta, New York, Chicago, the Los Angeles Area and across North and South Carolina, the Washington Post reported, citing immigration officials. In New York alone, there were nearly 40 arrests in the last week, according to a leaked memo by Immigration and Customs Enforcement on Saturday. The memo said that 95 percent of those arrested had criminal records.The raids have sparked an outcry from immigrant advocacy groups.Read more on VICE News.