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Australia: Background and U.S. Relations


Overview
The Commonwealth   of Australia is a close ally and partner
of the United States, and the relationship is underpinned by
the 1951 Australia-New Zealand-United States (ANZUS)
Treaty. The two countries enjoy close trade, political,
cultural, intelligence, and defense relations. As geopolitical
competition in the Indo-Pacific has increased, the alliance
has deepened over shared concerns about the military and
economic rise of the People's Republic of China (PRC or
China). In September 2021, the governments of Australia,
the United Kingdom (UK), and the United States launched
the AUKUS   security partnership, which is intended to
provide Australia with nuclear propulsion technology for its
next generation submarines and to jointly develop advanced
military capabilities. Australia and the United States also
coordinate through the Quadrilateral Security Dialogue (or
Quad, with Japan and India).

Australia is the world's sixth-largest country by surface
area (2.96 million sq. miles). Originally inhabited by
Aboriginal and Torres Strait Islander peoples, the modern
Australian state developed from a British penal colony
established in 1788. In 1901, Australia was granted
sovereignty over its domestic affairs; in 1942, it adopted the
1931 Statute of Westminster, claiming legal independence
from the UK and full control over its foreign relations.
Australia is a member of the Commonwealth of Nations, an
association of former British territories, and retains the
King of the United Kingdom as its head of state.


Po   tcs   and Governance
Australia has a bicameral legislature and holds elections at
least once every three years, with snap elections possible.


Updated April 10, 2026


The most recent general election was held in April
2025.The incumbent Labor  Party Prime Minister Anthony
Albanese won  reelection while the Liberal Party opposition
candidate lost his seat in parliament. The Labor Party and
the Liberal-National Parties Coalition are the country's two
main political forces. The Green Party of Australia has been
an influential political force at times.

Economics   and  Trade
The Australia-United States Free Trade Agreement
(AUSFTA)   came into force in 2005. Under AUSFTA, the
two countries provide reciprocal duty-free access to a broad
range of exports. The United States is Australia's second-
largest trading partner in goods and services. The United
States also is Australia's largest source of foreign direct
investment. Data from the U.S. Trade Representative
reveals that total U.S. goods and services trade with
Australia was $62.8 billion in 2025.

In April 2025, the Trump Administration announced that
imports from Australia would face a baseline 10% tariff
with some exceptions, under the International Emergency
Economic  Powers Act (IEEPA). After the Supreme Court
ruled against the use of IEEPA to impose tariffs in February
2026, President Trump imposed a 10% global tariff for 150
days under Section 122 of the Trade Act of 1974. The
Trump  Administration also has imposed 50% global tariffs
on steel and aluminum imports under Section 232 of the
Trade Expansion Act of 1962, but has not provided
Australia with a tariff exemption as it did during the
President's first administration.

Strategic Outlook
The Australian government's assessment of its security
environment has shifted considerably in the past decade. In
the mid-2010s, Australia's security community perceived
few imminent or proximate threats to its national security.
In 2024, Australia's inaugural National Defence Strategy
(NDS)  noted the commonwealth faced its most challenging
strategic environment since World War II.

In part, this assessment is motivated by concerns related to
U.S.-China competition, China's military modernization, a
lack of perceived transparency in China's military build-up,
and China's activities in Australia's near neighborhood
(particularly the Pacific Islands). While Australian officials
have not labeled China a military threat, the NDS states that
China has employed coercive tactics in pursuit of its
strategic objectives, including to alter the regional balance
of power in its favor. The NDS asserted Australia must
work even more closely with the U.S., our closest ally and
principal strategic partner.

To adjust to this changed strategic environment, Australia is
pursuing updates to its force structure and defense spending