Even though Donald Trump has not formally assumed the presidency of the United States, he has already begun to threaten tariffs. Recently, President-elect Donald Trump posted on social media that after his inauguration on January 20th next year, he will impose a 25% tariff on all products imported from Canada and Mexico to the USA. It is worth noting that Trump's proposed high tariff policy not only scares trade partners, but also has the potential to cause a rebound in inflation that the US has worked hard to bring down. Goldman Sachs stated that Trump's proposal to impose a 25% tariff on goods from Canada and Mexico will exacerbate inflation in the USA, leading to a 0.9% increase in core personal consumption expenditures (PCE) inflation.