WASHINGTON (AP) — Donald Trump’s transition team says the incoming president is planning to require officials to pledge that they won’t lobby the government for five years after leaving the Trump administration.

Transition spokesman Sean Spicer says Trump will require new government officials to terminate their role as either state or federal lobbyists before joining the administration. And he says government officials will agree to a five-year lobbying ban after leaving.

Trump has vowed to “drain the swamp” when he begins his White House administration next year.

Spicer says people leaving government “won’t be able to use that service to enrich themselves.”