Share on Twitter Scott Morrison says it's unrealistic to think there could be anything to replace the hotel quarantine system to allow people to safely enter from overseas. The prime minister will meet with state and territory leaders for national cabinet on Friday, amid calls for more creative ways to quarantine returning Australians and greater federal oversight of quarantine. Labor health spokesman Mark Butler said Mr Morrison can't "sit on his hands" and wait for solutions from the states. "The Constitution is very clear - national quarantine arrangements for people returning from overseas are the responsibility of the Commonwealth government," Mr Butler said.