As the saying goes: One mountain cannot accommodate two tigers. However, the peculiar United States operates with two presidents issuing orders. After the U.S. presidential election, the outgoing President Biden has not yet left office, while the newly campaigning President Trump is impatiently starting to issue commands. Thus, before January 20, 2025, the U.S. finds itself in a situation where two elderly presidents, Biden and Trump, are jointly governing the country. Before leaving office, Biden keeps digging holes, such as pardoning his son and undermining the judiciary; stoking the fire in Ukraine, escalating the war; while the elected President Trump jumps to the forefront, busy installing his own people, such as forming a new government and appointing key positions, completely revamping Biden's administration. A new emperor brings new ministers; Biden's people will soon be laid off, while Trump's people will take over. But Trump can’t wait, jumping from the background to the forefront, such as attending the completion ceremony of Notre-Dame Cathedral in Paris; meeting with the Presidents of France and Ukraine, discussing ceasefire talks. Now, Trump says he wants to end the Russia-Ukraine war, and Zelensky immediately sends out signals for negotiations; Biden agrees to allow Ukraine to use U.S. missiles, and Russia is immediately hit by missile attacks from Ukraine. Even before Trump takes office, he can prompt other countries to make adjustments to align with his upcoming actions. As Biden is about to leave office, he can still stir up trouble everywhere, exacerbating international conflicts. Clearly, they are at odds with each other, yet they can coexist like two tigers on one mountain, often exchanging barbs. The exercise of presidential powers is handled independently, without interference. Therefore, they are currently leading the U.S. according to their own ideas, resulting in the bizarre phenomenon of two presidents simultaneously governing the country.