This paper examines events associated with Union Pacific (UP) Railroad's attempt to obtain a significant minority share of the voting equity in Chicago Northwestern (CNW) Railroad. Rivals of UP petitioned the ICC to block the transaction, positing a theory of foreclosure that connects UP's...

This note reexamines the incentive of a regulated monopolist with an unregulated, vertically-related affiliate to discriminate against rivals of the affiliate. Taking Weisman's (1995) model as a framework, I show that his analysis understates the incentive to discriminate. My analysis shows that...