Homeland Security Secretary Kristi Noem was repeatedly pressed by senators Tuesday to explain, retract or apologize for her response to the fatal shootings of two U.S. citizens by federal immigration agents in Minneapolis. The Department of Homeland Security has been roiled by public outcry over its aggressive tactics and the climbing number of shooting deaths — including Renee Good and Alex Pretti, killed weeks apart — at the hands of federal immigration agents. Trump officials, including Noem,