Not valid in Alaska or Hawaii

Why is it that all those ads that talk about offers and contests display fine print "Not valid in Alaska or Hawaii", effectively restricting the goodies to us in the contiguous United States? I feel for those poor sods in the two far flung states. Well, maybe not the Alaskans... they have their sweetheart oil pipeline deals and bridges to nowhere. But the Hawaiians? They live on volcanos! They deserve to win a contest or two, don't they?