This article examines the decisions of litigants in criminal cases to
appeal decisions from the U.S. Courts of Appeals to the U.S. Supreme C
ourt. Using a random sample of search and seizure cases from 1962 thro
ugh 1990 and a measure of the likelihood that the appeals court decisi
on will be reversed if cert is granted, we demonstrate that litigants
behave as if they rationally consider costs and benefits in their deci
sions to appeal. Given the extraordinary number of cases decided by lo
wer federal courts vis-g-vis the number of cases the Supreme Court can
decide, we argue that such behavior is necessary if the Supreme Court
is to retain control over the federal judiciary.