Treasury Secretary Janet Yellen will use a speech to the McCain Institute in Arizona on Friday to deliver a clear warning about the economic dangers presented by Jan. 6-style attacks on American institutions. Why it matters: It's an unusual topic for a treasury secretary. But the Biden administration wants to tell voters — and Wall Street — that a second Trump administration would have economic risks. So the president is dispatching Yellen to a swing state — and a forum named after a famous Republican, the late Sen. John McCain — to draw a link between a healthy democracy and a strong economy. The business community ... (full story)