This album presents an avalanche of improbable situations: a trapdoor opens in the sidewalk Chicago train stops at Tintin tied to the rails ... However, it is with great pleasure that follows Tintin in the Land of Uncle Sam. The stereotypes are present but also rejoice the player, as the Redskins digging up the hatchet, cowboy wanting to hang Tintin, the oil rush ... The character of Mic Mac Adam Detective very funny and prefigures the Dupont. Overall, it is quite happy to see Tintin in the guise of a cowboy gangster chaser.