The White House has urged Britain to take “bold action” and defend citizens from mass migration. The US state department labelled mass migration an existential threat to Western civilisation and ordered its embassies across Europe to report crimes committed by illegal migrants. The department singled out the grooming gang scandal in Rotherham as an example of how Western nations have endured “crime waves” as a result of uncontrolled migration. Thousands of vulnerable girls were raped by gangs of predominantly Pakistani men in at least 50 towns and cities across Britain over several decades. The department said it had ordered officials...