TY - JOUR AU - Nakamura, Emi AU - Steinsson, Jón TI - Fiscal Stimulus in a Monetary Union: Evidence from U.S. Regions JF - National Bureau of Economic Research Working Paper Series VL - No. 17391 PY - 2011 Y2 - September 2011 DO - 10.3386/w17391 UR - http://www.nber.org/papers/w17391 L1 - http://www.nber.org/papers/w17391.pdf N1 - Author contact info: Emi Nakamura Department of Economics University of California, Berkeley 685 Evans Hall Berkeley, CA 94720 Tel: 510/643-2104 E-Mail: enakamura@berkeley.edu Jón Steinsson Department of Economics University of California, Berkeley 671 Evans Hall Berkeley, CA 94720 Tel: 510/642-3674 E-Mail: jsteinsson@berkeley.edu AB - We use rich historical data on military procurement spending across U.S. regions to estimate the effects of government spending in a monetary union. Aggregate military build-ups and draw- downs have differential effects across regions. We use this variation to estimate an "open economy relative multiplier" of approximately 1.5. We develop a framework for interpreting this estimate and relating it to estimates of the standard closed economy aggregate multiplier. The closed economy aggregate multiplier is highly sensitive to how strongly aggregate monetary and tax policy "leans against the wind." In contrast, our open economy relative multiplier "differences out" these effects because different regions in the union share a common monetary and tax policy. Our estimates provide evidence in favor of models in which demand shocks can have large effects on output. ER -