UPDATE 4.40pm: Perth residents eager to catch a glimpse of US Secretary of State Hillary Clinton will have their best chance tomorrow at the State Reception Centre in Kings Park.
Mrs Clinton's United States jet touched down at Perth Airport this morning. She was welcomed by several dignitaries including Premier Colin Barnett and Australian Ambassador to the US Kim Beazley.
Her movements in Perth are shrouded in secrecy with several agencies, including WA Police and Australian Federal Police, helping guard her.
It is understood no roads will be closed but a series of green lights or "green corridors" will be organised for her motorcade.
Demonstrators are expected at the AUSMIN talks between Australia and the US on foreign policy and defence at the State Reception Centre.
A coalition of not-for-profit groups including Amnesty International, Oxfam and the Medical Association for Prevention of War will protest in a call for tougher regulation of the global arms trade.
There was a big police presence in Kings Park yesterday as authorities prepared for the talks.
The City of Perth will offer Mrs Clinton the keys to the city.
Premier Colin Barnett gushed about meeting Mrs Clinton while addressing a mining conference straight after receiving her at the airport.
“I’ve got to say what an entertaining, charming, fantastic person,” he told delegates at the Australian Resources and Trade Show at Perth Convention Exhibition Centre.
He later told reporters Mrs Clinton spoke to him and his wife Lyn for about 10 minutes on the tarmac, despite her 30 hour flight.
“(Mrs Clinton appeared) very relaxed, very pleased to be here,” Mr Barnett said.
The council voted unanimously in favour of Lord Mayor Lisa Scaffidi's nomination for the symbolic gesture.
The move commonly involves a ceremony but it is not known if Mrs Clinton's schedule will allow her to accept the keys in person.
A recipient of the keys must have a high level of achievement and service in business, education or cultural activity relating to Perth.