Comment policy

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Measuring global economic activity

Measuring the level of global economic activity is of key interest. But the measures we have on variables like industrial production don’t cover all countries and are only available with a significant lag. Michigan Professor Lutz Kilian suggested in an influential paper published in 2009 that we could get a useful timely indicator by looking at average shipping costs. I recently had a chance to look into the details of how that series is constructed and have some suggested improvements.
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The CBO on Trade Policy Uncertainty

The CBO’s Budget and Economic Outlook is a must read. In addition to the widening budget deficit (no supply side miracle here), and the downward revision in projected 2018 growth, there is this commentary in the section blandly titled “Some Uncertainties in the Economic Outlook” (page 14 onward):

A sizable uncertainty in the U.S. trade and inflation forecast stems from recent changes to U.S. import tariffs and the retaliation of the country’s key trading partners.

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Treatment of Nations Implementing Measures Not Consistent with the WTO

Statement yesterday, as reported by Washington Examiner:

“[That country] really needs to make up its mind” … “Do they want to be in the community of nations, do they want to be part of the WTO and just behave like everybody else, or don’t they?”

“And if they don’t, then we, the community of nations, are going to have to think about what are we going to do about that?”… “Are we going to let them stay in the WTO?”

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Guest Contribution: “Trump’s Trade Policy Uncertainty Deters Investment”

Today, we are fortunate to be able to present a guest contribution written by Steven J. Davis, William H. Abbot Distinguished Service Professor of International Business and Economics at the University of Chicago Booth School of Business and Senior Fellow at the Hoover Institution.


Donald Trump has upended U.S. trade policy. The particulars include a U.S. pullout from the Trans-Pacific Partnership (TPP), threats to jettison the North American Free Trade Agreement, a refusal to affirm new WTO judges, tariff hikes on steel and other goods, frequent rhetorical attacks on major trading partners, and a wrong-headed obsession with bilateral trade deficits.

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