Mexican President Claudia Sheinbaum schooled Trump, warning that his plan for tariffs on imported goods would result in mutually assured economic destruction for both countries.

Put simply, tariffs are a tax on imports. Here's what Donald Trump did with them in his first term and how they impact the economy.

While the announcement is almost certainly bluster to bring attention to illegal immigration and fentanyl smuggling, there are several reasons why it is so risky.