A new ABC News report explores the volatile state of the U.S. housing market as escalating trade tensions send mortgage rates on a "whipsaw" trajectory. With global economic uncertainty fueling fluctuations in bond yields, prospective homebuyers are facing a landscape where borrowing costs can shift significantly in a single week, complicating affordability in an already tight market.

Penn IUR Co-Director and Wharton professor Susan Wachter weighs in:

President Trump is certainly not sitting back and doing nothing.