This verdict shows that there is still needed improvement, particularly regarding punishing collusive practices. Claudio A. Agostini, Eduardo Saavedra, & Manuel Willington, Alberto Hurtado University

Before 1978, most of the domestic copper production in the US and an important share of imports were traded at a price set by the major US producers. At the same time, the rest of the world was trading copper at prices determined in auction markets. This two-price system ended in 1978, when the...