In 2025, the American politics showed a "revolutionary big".Trump rolled back and sat back on the presidential chair.
Biden's warning during the election that "Trump's return will throw the United States into chaos and lose global leadership" now seems to be no longer just a war of words in the mouth of political opponents.
In the past nine months, the United States has not only fought a new round of tariff warfare, but also "retreated" across the diplomatic field, and domestically is a chicken fur.
The superpower that once made the world "afraid and convinced" now seems to be personally tearing down its painstakingly managed building.
Biden’s words might be true: If this continues, the United States may really become the "second child in the world."
Pick up tariffs, the U.S. economy shattered its feet
After Trump's return, the first card played was the "tariff upgrade version".This time, even allies did not let go. 10% of the global benchmark tariffs directly on the table, the tax on Chinese goods is even higher, and the 125% tax rate makes a lot of companies cry "unbearable".
The problem is, This "protectionist replica" did not bring about the revival of American manufacturing, but pushed American consumers to the forefront of rising prices.
Between 2024 and 2025, the level of inflation in the United States has not rebounded, the CPI has risen by 3%, and an average family will cost more than $ 3,000 a year.
Looking at the capital market, it did not give Trump the face. The U.S. stock broke down the entire line in the first quarter of 2025, the S&P 500 fell 11%, and the index was even worse, falling 16%.
The Atlanta Fed predicts that the U.S. economy will shrink by nearly 3%, which is not a small amount. In the past few months,"Trump recession" has become a hot word in financial circles.
To make matters worse, the world has also begun to counter-attack. The European Union, Canada and other countries no longer swallow their anger, and have introduced counter-tariffs against the United States. The supply chain is even more chaotic, with American car companies, farmers, and exporters complaining bitterly.
Positions at the level of 100,000 are at risk, This “economic self-determination” policy has left the United States, which once dominated global trade, the shadow of the Great Depression in the 1930s with the Smuthe-Holey Customs Act.。
The big problem behind it is actually deeper. The position of the dollar as a global currency is no longer as stable as Thailand, and the voice of dollarization is coming from behind the scenes.
Saudi Arabia announced that it will start using RMB to settle some oil transactions, and ASEAN countries are also promoting local currency settlement mechanisms. This is not just an economic war of words, but more like a breakdown of global trust.
“Diplomatic retreat,” American leadership is disappearing
If economic policy is pushing the U.S. toward the “world’s second-old”, then diplomatic “self-isolation” is the crust that crushes the camels.
After Trump took office, he withdrew from the Paris Agreement, coldly handled aid to Ukraine, and even publicly expressed his "distrust" of the WHO and the United Nations. United States, This former "world policeman" is now more like a "world retreat king".
Even more striking is that Trump’s “must-fire diplomacy” has escalated again. He has repeatedly stated in public that he hopes to “buy Greenland” and that Canada should become “the 51st state of the United States.”
Denmark responded directly, saying "Greenland is not for sale", and Canada was more cold and unwilling to accept this "old friend". This unhindered “trade-style diplomacy” makes America’s allies feel cold.
The Pew Research Center's latest poll showed that U.S. confidence jumped collectively in 19 major countries, Canadians' negative impression of the U.S. reached a new high, and even 73% of respondents said "bad sense of aesthetics."
Europe is no longer relying on the United States, and the EU launched the White Paper "Ready for 2030", which made it clear that to strengthen independent defense capabilities, "no longer depend entirely on the United States."
Even the Guardian, a traditional ally of Britain, bluntly said: The United States is no longer the “reliable ally,” but the “greatest perturber” of the global political order.
U.S. leadership is no longer astronomical, but is gradually diluted in a field of “retreat” and “threat”.
In the Middle East, the influence of the United States is also declining. The Iranian issue was shelved and Saudi Arabia and Iran quietly reconciled. Behind this, China's mediation became increasingly clear.
Trump's "America First" looks more like "America Alone", and the consensus of the international community is quietly turning to multipolarization.
The internal affairs are torn apart, the system crisis is knocking on the door.
If diplomatic isolation is "external injury", then internal chaos is "internal injury". Trump's internal affairs strategy after his return almost wrote "split" into daily government affairs.
As soon as he took office, he laid off tens of thousands of federal employees, claiming to "slim down the government." but the result is A large number of basic jobs are vacant, and industries such as agriculture and construction that rely on immigrant labor are directly plunged into a manpower shortage.
Meanwhile, the immigration policy has been tightened again and deportations have been frequent and have sparked protests. Even the traditional holiday "President's Day" has become an opportunity for people to march on the streets.
What's more worrying is that, Trump's attitude towards the judicial system and democracy。
Participants in the Capitol Hill incident in 2021 should have been held accountable according to law, but Trump opened the door to pardon and attacked the judicial system for "favoring hostile parties" in public speeches.
This behavior has made many legal experts clear that the United States is on the brink of a systemic downturn.
Biden said as early as the 2024 election that The United States is facing the "threat of a new oligarchy," and now this fear is becoming a reality.
Political party polarization, social disintegration, and the collapse of the system, all three interwoven into an invisible network, are dragging the United States into a system dungeon.
The deeper crisis lies in the fact that the "consensus" in American society is collapsing.
Opposition between left and right, racial conflicts, and class tearing are not new problems, but under Trump's administration, these problems have been continuously amplified and become more difficult to reconcile. How can a country that is not united even at home maintain its leadership in the world?
The possibility of the “old world” is not really alarming.
In just nine months, the United States is experiencing an experiment of "self-weakening" from the inside to the outside. Trump's policy seems vigorous and vigorous, but it is actually a "political gamble" without a bottom line.
Economic foundations shake, ally confidence collapses, institutional crises emerge, and the three pillars of U.S. hegemony collectively urge.
The once uncompromising superpower has now smashed itself in the tariff war, been marginalized by its allies in the diplomatic field, and fallen into self-tearing in internal affairs.
Biden’s prophecy, which is no longer just an offensive talk during the election, now seems to be becoming a bit of a reality. The United States continues to follow this "Trump line", which means that it is voluntarily ceding its position as global leadership.
And this position, the world will not be empty. China, the European Union and even emerging economies are waiting in line to fill in.
But the decline of the United States will not be completed in one day, it is a slow but irreversible process.The four years of Trump may not have caused the United States to fall immediately, but it is enough to make the world begin to adapt to a new order "without American domination".
As for China, This is not necessarily good news, but more like a "strategic exam".
Opportunities and challenges coexist, and the key is whether we can stay focused and keep pace in the face of change. To really be on the international stage, it is far from enough to rely on the opponent to make mistakes.
conclusion
Nine months after Trump's reign, America's "big dream" has begun to loosen.Biden's warning has become a picture of reality, "the world's old two" is no longer a joke, but a near-eye possibility.
The global pattern of the future is no longer centred on Washington, and a multipolar era is silently opening up.
And while the United States is still trying to “make America great again,” the rest of the world has begun to prepare for the “post-American era.”