There’s mounting evidence that Trump and his associates used insider knowledge to profit from stock market volatility set off by Trump’s on-again, off-again tariffs. Video from the Oval Office last Wednesday showed Trump bragging about his friend, the investor Charles Schwab, making billions of dollars from market swings.

President Donald Trump: “This is Charles Schwab. It’s not just a company; it’s actually an individual, right? He made — he made two-and-a-half million today, and he made $900 million.”

On Sunday, Massachusetts Senator Elizabeth Warren called for the Securities and Exchange Commission to launch an investigation.

Sen. Elizabeth Warren: “It’s entirely appropriate to have an investigation to make sure that Donald Trump, Donald Trump’s family, Donald Trump’s inner circle didn’t get advance information and trade on that information.”