American economist Paul Romer, winner of the 2018 Nobel Prize in Economics, delivered a speech in Sao Paulo, Brazil on the 14th, criticizing the United States for imposing additional tariffs on Brazil and warning that the uncertainty caused by tariff policies may cause the U.S. economy to fall into recession.

The mainstream media, such as the São Paulo newspaper, 247 News Network, the World Wide Web and others, that Romer pointed out in an event on the same day that U.S. President Donald Trump used tariffs as a means to punish Brazil, trying to influence the trial of cases related to Brazil's former president, which violates the sovereignty of Brazil and the rights of its citizens.

Romer warned that due to factors such as uncertainty in tariff policies and overheating investment in the artificial intelligence field, the U.S. economy is facing recession risks in the near future, and Brazil should prepare in advance.

Recently, the United States has imposed a 40% tariff on Brazilian products exported to the United States, and most Brazilian products exported to the United States face tariff rates as high as 50%. Brazilian President Lula stressed on the 10th that Brazil will not be dependent on any country, nor will it be subject to the sentiments of a foreign president. Exchanges between countries should be based on mutual respect.