Markets were abuzz with headlines from Washington today. The S&P 500 opened 1.7% lower on the weekend's news that President Donald Trump announced that he would slap 25% tariffs on Mexico and Canada on Tuesday. But losses were pared significantly after Trump's call with Mexican President Claudia Sheinbaum resulted in a one-month delay of tariffs as well as bilateral cooperation on fentanyl, immigration, and countering China.