Affected inspectors general were sent emails from the director of presidential personnel overnight on Friday telling them that “due to changing priorities, your position as inspector general… is terminated, effective immediately”, according to CBS News, the BBC’s US partner.

The group of dismissed watchdogs includes the inspector general for the Department of Health and Human Services, and the inspector general of the Small Business Administration, CBS said.

There were competing lists of fired watchdogs circulating, according to the New York Times. Watchdogs at the departments of agriculture, commerce, defence, education, housing and urban development, interior, labor, transportation and veterans affairs, as well as the Environmental Protection Agency were all reportedly considered.

It is unclear whom the Trump administration might pick to fill the newly vacant positions.

Congress created inspectors general in the wake of the Watergate scandal, as part of a wave of reforms intended to curb corruption, waste and fraud. The independent watchdogs – who work within federal agencies but are not controlled by the head of those agencies – are meant to serve as a guard against mismanagement and abuse of power.

Though they are presidential appointees, they are expected to be nonpartisan.

The firings may be in breach of a law that requires the White House to give Congress 30-day notice and case-specific information before dismissing a federal inspector general.

Hannibal Ware, the inspector general of the Small Business Administration and head of a council of the watchdog across agencies sent a letter to Sergio Gor, the head of the White House Office of Presidential Personnel suggesting the dismissals were invalid.

“I recommend that you reach out to White House your intended course of action,” Ware wrote. “At this point, we do not believe the actions taken are legally sufficient to dismiss presidentially appointed, Senate-confirmed inspectors general.”

In a separate statement released on Saturday afternoon, Ware wrote that dismissals “inconsistent with the law” were a grave threat to to the independence of inspectors general.

“IGs [inspectors general] are not immune from removal,” he wrote. “However, the law must be followed to protect independent government oversight for America.”

Democrats were quick to criticise the president for the move.

Schumer said the move was a “preview of the lawless approach” Trump and his administration were taking.

Gerry Connolly, a Virginia Democrat and ranking member of the House Oversight Committee, called the firings a “Friday night coup” and an “attack on transparency and accountability”.

He and 20 other Democratic members of congress wrote a letter directly to President Trump which expressed “grave concern” for the dismissals and urged him to reconsider.

“Your actions violate the law, attack our democracy, and undermine the safety of the American people,” the representatives wrote, a group that included Jamie Raskin of Maryland, Zoe Lofgren of California, and Rosa DeLauro of Connecticut.

Some Republican lawmakers, including Senator Chuck Grassley of Iowa and Senator Susan Collins of Maine also expressed concern over the purge.

“I don’t understand why one would fire individuals whose mission it is to root out waste, fraud and abuse,” Collins said at the Capitol on Saturday. “I don’t understand it.”

[BBC]