Kirstjen Nielsen, U.S. secretary of Homeland Security (DHS), listens during a House Homeland Committee hearing in Washington, D.C., U.S. (Photographer: Andrew Harrer/Bloomberg)

Trump Ousts DHS Chief as Border Promises Unravel Ahead of 2020

(Bloomberg) -- Donald Trump’s frustration over his inability to fulfill his signature 2016 campaign promise to curb illegal immigration led him to oust his second homeland security chief, as the pr...