The official human rights watchdog is launching legal action to investigate the Home Office’s “hostile environment” policy, which led to the Windrush scandal.The Equality and Human Rights Commission (EHRC) said it will use its statutory powers to examine whether the Home Office complied with its public sector equality duty in drawing up the tough immigration policy.The strategy was devised under former Prime Minister, Theresa May, when she was home secretary in the coalition government to deter illegal immigration and continued under her successor, Amber Rudd.It resulted in thousands of Commonwealth immigrants from the 'Windrush generation' – who came to Britain in the decades following the Second World War – being wrongly denied rights,.