Donald Trump has indicated that Elon Musk’s “department of government efficiency” (Doge) is operating without guardrails after it gained access to Americans’ private information “very easily” and as it prepares to assail the Pentagon. The US president was speaking at a White House press conference alongside Shigeru Ishiba, the prime minister of Japan, but most of the questions focused on Musk’s sweeping mission to root out waste in the federal government, which has caused disarray in Washington. Trump suggested that he has given the tech billionaire free rein and appeared blase about the details. Asked why Doge needs access to...