Antidumping laws alter the pricing policies of foreign firms to the be
nefit of domestic ones. Unilaterally, domestic firms want to lobby for
antidumping restrictions; unilaterally, consumers want to lobby again
st them. This paper shows that if firms succeed in both countries, the
ir profits fall and consumer surplus rises, so that firms end up worki
ng for consumers everywhere by lobbying. It also shows that each gover
nment, maximizing total domestic surplus, prefers no legislation irres
pective of the action of another government. However, world surplus ma
y be greater with antidumping rules. These results hold under both Ber
trand and Cournot competition.