Acting secretary blocked Stephen Miller’s bid for another DHS shake-up

An attempt by President Trump’s senior adviser Stephen Miller to engineer a new shake-up at the Department of Homeland Security was blocked this week by Kevin McAleenan, the department’s acting secretary, who said he might leave his post unless the situation improved and he was given more control over his agency, administration officials said.

The closed-door clash flared over the fate of Mark Morgan, the former FBI official the president has picked to be the new director of U.S. Immigration and Customs Enforcement.