One of the authors of the book the jobs claim relies on says they are using his data wrong:
The Obama administrations illusionary job gains from the Trans-Pacific Partnership
By Glenn Kessler January 30 at 3:00 AM
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The Peterson Institute in 2012 published a book titled The Trans-Pacific Partnership and Asia-Pacific Integration: A Quantitative Assessment, by Peter A. Petri, Michael G. Plummer and Fan Zhai. The book does include an estimate that, by 2025, the United States would experience a gain of $77.5 billion in income from TPP, as well as a $124 billion increase in exports. (More on those numbers, which are expressed in 2007 dollars, below.) But nowhere in the book does it says 650,000 jobs would be created.
Asked about the statistic on 650,000 jobs, the White House referred us to the Office of the U.S. Trade Representative. USTR spokesman Matthew McAlvanah directed us to page 58 of the book. They do not provide an estimate on jobs, he acknowledged. However they do provide a methodology that one could use.
Essentially, the book suggests that an income gain of $121,000 would be roughly equivalent to creating an extra job. So the Obama administration took the figure of $77.5 billion and divided it by $121,000, which yields 640,000. Rounded up, that becomes 650,000.
Theres just one problem: Petri says this is the incorrect way to use his research, especially when officials such as Kerry combine the jobs figure in the same sentence as the income prediction: The TPP could provide $77 billion a year in real income and support 650,000 new jobs in the US alone....
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Full article:
http://www.washingtonpost.com/blogs/fact-checker/wp/2015/01/30/the-obama-administrations-illusionary-job-gains-from-the-trans-pacific-partnership/