The Justice Department has prioritized a probe that the president hopes will discredit a finding by U.S. intelligence agencies that Russia interfered in the 2016 election to help him win. As part of that effort, Attorney General William P. Barr has met overseas with foreign intelligence officials to enlist their aid in “investigating the investigators,” as the right’s rallying cry goes, and dig into the president’s suspicions.

The State Department, meanwhile, has been investigating the email records of as many as 130 current and former department officials who sent messages to the private email account of Hillary Clinton, the former secretary of state and Trump’s 2016 opponent. Secretary of State Mike Pompeo defied Congress on Tuesday by attempting to block the depositions of five department employees called to testify in the impeachment inquiry…

But taken together, they illustrate the sweeping reach of Trump’s power and the culture he has spawned inside the government. The president’s personal concerns have become priorities of departments that traditionally have operated with some degree of political independence from the White House — and their leaders are engaging their boss’s obsessions.

“Barr and Pompeo are stuck in the fog machine. They seem captives of the president’s perverse worldview,” said Timothy Naftali, a historian and former director of the Richard Nixon Presidential Library and Museum. “Authoritarian regimes have this problem all the time . . . when all government activity is the product of the id of the leader. But in a republic, that’s unusual.”