The Act has clearly, over time, been one of the most controversial pieces of Australian legislation and has been subject to numerous changes and amendments since its enactment. A number of amendments have reflected the political climate of the times: centre-left Australian governments, such as those led by the Australian Labor Party, strengthened the relevancy of non-financial contribution of the stay-at-home mother in property matters; centre-right governments, such as those led by the Liberal Party of Australia, have furthered the wishes of fathers' groups by extending the rights and responsibilities in negotiating parenting arrangements.