Former Treasury Secretary Lawrence H. Summers explains the implications of tariffs on the US economy, saying that tariffs cannot simultaneously be a source of revenue and a crowbar. Watch "Wall Street Week" tonight at 6 p.m. ET

@LHSummers Never before, in the history of the world, has so much value been destroyed so quickly by ONE PERSON on purpose.

Here’s what could get more expensive with Trump’s new tariffs.

@LHSummers Larry messed up Harvard and wasn’t much to write home about as the Treasury Secretary. Why is anyone giving him screen time?

@LHSummers where were you for the last 4 yrs? trillion $ $ def. forever with zero spending cut show long before econ.collapse? thank God for pres. trump