The public arrest of Adelphia executives on July 24, 2002 signaled tougher enforcement of laws against corporate crime. On that day and the two following days, foreign firms experienced a cumulative 1.7% decline in value. Relative to domestic firms, the loss was a much larger 4.5%. The expected cost to firms from tougher enforcement suggests three possible reasons. Foreign firms may be targeted more heavily, may face greater penalties, or may find it more costly to react to (deflect) enforcement. We find evidence consistent with foreign firms facing higher costs from tougher enforcement for each of these reasons.