New institutionalists argue that analysts are mistaken to separate pro
cess from policy in studying Congress's role in policy making. Rather,
Congress changes the structure and procedures of decision making in t
he executive branch in order to influence the content of policy. Attem
pts to substantiate this claim have examined procedural changes in dom
estic affairs. This paper extends the argument by assessing the impact
of five procedural changes in the area of defense and foreign policy:
the Office of the Director of Operational Test and Evaluation, the le
gislative veto on arms sales, legislative participation in trade negot
iations, the conditions attached to U.S. security assistance, and the
reporting requirements imposed on the intelligence community. The five
case studies suggest that procedural changes do at times enable Congr
ess to build its preferences into U.S. foreign policy, but the success
es are partial rather than total. Procedural changes meet only partial
success because of executive branch opposition and the cost of monito
ring and punishing noncompliance. The findings point to the need to in
corporate more sophisticated assumptions about Congress and the bureau
cracy into future research.