White House staff must now receive prior approval from the Office of White House Counsel before meeting with registered lobbyists, under a new memo from the office of Chief of Staff Stephen Miller that was first reported by Politico on Thursday night.

“No President in history has fought more relentlessly, selflessly or courageously for the American People than President Trump,” the memo says. “Following his example, White House staff are expected to dedicate their time unwaveringly to the working people of the nation.”

The approval requirement covers meetings on the White House complex with registered lobbyists about government policy. The memo says the Office of Public Liaison will remain the primary point of contact for engagement with outside stakeholders.

A White House official told The Hill that the memo went out Thursday night and described the new rule as a “much stricter process than before.”

President Trump named Mr. Miller, a longtime adviser, as White House chief of staff last week, and the memo is among his first moves in the job.

The White House has said the administration “has never allowed and will never allow outside groups to influence policy decisions.”

“President Trump is busy executing on his America First agenda that includes the largest working-class tax cuts in history, over a million private sector jobs added to the economy, a sealed shut border, and lowest violent crime to the lowest level in nearly a century,” White House spokesperson Allison Schuster said in a statement.