People who work with Trump must sever all their ties to the lobbying industry, and they are not allowed to lobby on behalf of anyone for five years after they leave the Donald's side.

The ban also applies to the transition team members charged with helping to find, vet and hire for the incoming Republican administration, Trump spokesman Sean Spicer said late Wednesday in New York.

Additionally, neither the transition advisers nor incoming officials are permitted to be registered federal or state lobbyists, Spicer said. He described the measures as helping to ensure people won't be able to use government service 'to enrich themselves.'

The Trump team did not explain how the ban would be enforced.