What to Know
U.S. President Donald Trump said earlier today that China's President Xi Jinping was "extremely hard" to make a deal with.
A senior White House official told CNBC that Trump and Xi are likely to speak this week.
Trump signed an executive order increasing the already substantial 25% duties on steel imports he first set in March to 50%.
The two countries have blamed each other for violating a trade agreement reached in Switzerland on May 12. Follow along for live updates.