a wide range of issues including economic and defence cooperation, travel, South Pacific affairs, race relations and nuclear weapons testing. With regards to travel, the two Prime Ministers agreed that citizens of each country and citizens of other Commonwealth countries who had resident status in either Australia or New Zealand should henceforth be able to travel between Australia and New Zealand, for a permanent or temporary stay, without passports or visas. They also agreed that talks between immigration officials of the two countries regarding practical arrangements for the implementation of the new policy would take place as soon as possible thereafter. The negotiation of the details of the Arrangement (or Open Door Policy as it was then called) was announced on 4 February 1973 by the Australian Minister for Immigration, Mr. A. J. Grassby. Two special emissaries of the Australian government (Mr. G. E. Hitchins and Mr. T. A. Smith of the Department of Immigration) visited New Zealand from 5–9 February 1973 to arrange the details of the implementation of the open door policy agreed upon by Prime Ministers Whitlam and Kirk. The TTTA itself was then implemented on 1 March 1973. Two weeks later on 15 March 1973, the New Zealand Minister for Immigration, Mr. F. M. Colman, and Mr. A. J. Grassby reviewed the revised travel requirements in Canberra and issued a joint press release on the exercise. For the press release the Ministers recalled that under the relaxed procedures passports and prior authority to enter were not required for direct travel between Australia and New Zealand by: (1) Citizens of Australia or New Zealand; (2) Citizens of other Commonwealth countries who have been granted permission to reside indefinitely in either Australia or New Zealand; It was also announced that in addition to the relaxed requirements for crossing the Tasman Sea all holders of New Zealand passports would in future be permitted to travel to Australia without prior authority. All Australian passport holders travelling to New Zealand from any part of the world had been able to enter New Zealand without prior authority for the past two years. Changes in the 1980s On 24 April 1981, Australian Minister for Immigration Ian Macphee announced that all people entering Australia (including New Zealand citizens) would be required to carry a passport as from 1 July 1981. This measure was intended to curb abuses of the existing Trans-Tasman Travel Arrangement. The