American Empire is a term sometimes used to describe the historical expansionism and the current political, economic, and cultural influence of the United States on a global scale.
The term "empire" has two uncontroversial meanings.
In one sense, the U.
S.
is not an empire, because it lacks a legal emperor, king, despot, or other hereditary head of state.
In another sense, the U.
S.
satisfies the definition of an empire, because it possesses sovereignty over territories which it has not annexed as states, such as Puerto Rico, American Samoa, Guam and in the past the Trust Territory of the Pacific Islands and the Philippines.
The United States is indeed an empire and has been for a long time.
It is a liberal empire that upholds rules and institutions and underwrites public goods by maintaining peace, ensuring freedom of the seas and skies, and managing a system of international trade and finance.
The United States is the imperfect but natural inheritor of the British system of global governance; it is open and integrative and inclined toward informal rule.
Accordingly, some scholar's worry is not that the world will get too much American empire but that it will not get enough.
U.
S.
leaders, for all their benign intent, have unusually short attention spans and tend to go wobbly.
Today, the "American empire" is a term of approval and optimism for some and disparagement and danger for others.
Neoconservatives celebrate the imperial exercise of U.
S.
power, which, in a modern version of Rudyard Kipling's "white man's burden," is a liberal force that promotes democracy and undercuts tyranny, terrorism, military aggression, and weapons proliferation.
Critics who identify an emerging American empire, meanwhile, worry about its unacceptable financial costs, its corrosive effect on democracy, and the threat it poses to the institutions and alliances that have secured U.
S.
national interests since World War II.
Some intellectuals argue that U.
S.
is undermining and losing his world position.
Decline can have many aspects, like international institutions approach.
Power of American empire is declining in transnational Institutions like UN, NATO, KYOTO Protocol, WTO, and else, because of unilateral policies in international system and decision- making process in international institutions, as well as reforming structure of these institutions like UN.
Also, leaving, not perform, and rejecting the international regimes, regulations, and process effects on withering of America.
Declining American position in these institutions will continue in the future under beneath of this situations, unless this power change his international treatment and practices or change American administration that finish imperialistic, unilateral, and illegal policies in global policies, particularly in multinational institutions.
United States of America is shaping world affairs and determining global political issues.
Any issues, politics, economy, commerce, military, even environment relate to American.
U.
S.
reacts to all affairs in each corner of world.
U.
S.
has define her national interest very expanded and evaluated any issues in any point of glob based on her interests.
Today, some scholars remark this state as an empire and compare with past empires.
There is a debate between political scientists and experts that this empire is declining and falling, but others believe that it remain the hegemonic and super power in twenty first century.
Scholars emphasize to one or several declining aspects of U.
S.
Empire.
For instance, some considers internal problems, budget deficit, cultural deficit, or attention deficit, and identity challenges, but others emphasize to external problems.
Externally, there are different approaches like multinational institutions, regional Security-defense blocks, and regional conflicts and crisis.