The data supports lowering interest rates, says Wharton's Jeremy Siegel

Welcome back to Squawk Box. Joining us now Jeremy Siegel, chief economist at Wisdomtree and professor emeritus of finance at University of Pennsylvania's Wharton School of Business. Good to see you, Jeremy.We have had guys like Kevin Warsh will mention tariff inflation. He'll say tariffs aren't what causes inflation. Never has been, never will be.Inflation is caused by an out of control money supply or too much stimulus stimulus in a supply constrained world, in your view. And what you're saying here, up th ...