Oil prices declined following the election of Donald Trump as the U.S. president, primarily due to a stronger dollar making crude oil more expensive for holders of other currencies. This shift impacted global oil markets, causing volatility amid investor uncertainty over future U.S. policies affecting energy, trade, and economic regulations. Analysts observed that Trump's election introduced unpredictability regarding U.S. oil production and regulatory frameworks, particularly given his focus on boosting domestic energy production and reducing reliance on foreign oil.

The dollar’s rise, prompted by investor interest in U.S. assets under potential Trump-driven economic growth, resulted in costlier oil imports for nations trading in other currencies. This currency effect contributed to the drop in crude prices, as a more expensive dollar often dampens international demand for dollar-denominated commodities like oil. Trump's energy policy focus on deregulation and encouragement of U.S. fossil fuel development raised expectations that American oil production might increase, potentially leading to supply surpluses and further pressuring prices.

Global markets showed mixed responses to Trump’s win, with energy companies experiencing shifts in stock values as investors adjusted to possible changes in trade and energy policy. The oil price drop underscores the interconnectedness of currency values, market sentiment, and energy pricing dynamics on the international stage.