It's time now for Ask An Expert. Every weekday at 9:20AM on KCBS we're giving you direct access to top experts in various fields.

As new tariffs continue to go into effect today, some experts are looking back at historical instances of this type of economic strategy for hints as to how this might go.

To answer your questions and more, KCBS Radio news anchor Margie Shafer spoke with Douglas Irwin, economics professor at Dartmouth, former president of the economic history association and author of the book Clashing over Commerce: A History of U.S. Trade Policy.