A White House official declared that Mr. Musk was not the administrator of the so-called Department of Government Efficiency. So who is?

In an effort to slash government spending, President Trump has asked the world’s richest man, Tesla CEO Elon Musk, to lead his Department of Government Efficiency (DOGE). In turn, Musk and his team have spent the first few weeks of Trump’s second term waging a largely unchecked war on the federal bureaucracy — an onslaught that was finally