When economists make the sometimes excruciating effort to incorporate political processes into their study of trade policy, they like "to apply the same methods they use in analyzing economic behavior." This does not always work very well, but Professor Baldwin has done a heroic job of combining a review of what has been done with original investigations of his own. As he says, some of the results are obvious although stated "in a more rigorous manner than individual experience usually yields." Economists should have confidence because the work is done by one so highly qualified in their field. Others should not ignore the work as it has valuable systematic descriptions of policymaking and firsthand analysis of much recent experience.