Last week, the Trump administration announced that it reached a deal with Vietnam that would allow U.S. goods to enter the country duty-free, while Vietnamese exports to the U.S. would face a 20% levy. That was a decline from the 46% tax on Vietnamese imports he proposed in April.

The stock market opened lower on Monday, as President Donald Trump's tariff policies dominated the headlines. S&P 500 (SP500) -0.4%, the Dow (DJI) -0.3%, and the Nasdaq Composite (COMP:IND) -0.7%. The 10-year Treasury yield (US10Y) rose 1 basis point to 4.

Wall Street's main indexes extended their fall on Monday after U.S. President Donald Trump said he would impose a 25% tariff on goods from Japan and South Korea, starting on Aug. 1.