President Trump and officials addressed thousands at a White House-organized prayer rally in Washington, intended to revive the concept of a nation founded on Christian principles. Critics viewed it as a promotion of Christian nationalism.

US President Donald Trump and top cabinet officials addressed thousands of Americans at a mass prayer rally in Washington on Sunday – an event critics saw as an overt display of Christian nationalism undermining the separation of church and state. The gathering was organised by the White House as part of a programme of celebrations for America’s 250th anniversary and billed as an opportunity to revive the idea of a country founded on Christian principles. During the outdoor event on the National...