White House staff must now get approval from the Office of White House Counsel before they meet with registered lobbyists. The rule comes from a new memo from the office of Chief of Staff Stephen Miller. Politico first reported the memo 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 rule covers meetings at the White House complex with registered lobbyists about government policy. The memo says the Office of Public Liaison will stay the main point of contact for outside groups.

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

President Trump named Mr. Miller, a longtime adviser, as White House chief of staff last week. The memo is one of 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.