Historical evaluation of the Morrow mission to Mexico, October, 1927 to September, 1930, has been ill-served by polemicists, adulators, and critics who have misrepresented the state of relations between the United States and Mexico in 1927, misinterpreted the nature of Morrow’s accomplishments, and overemphasized the persistence of the problems with which he had to deal. It is the purpose of this paper to clarify the circumstances attendant on Morrow’s appointment, to describe the character of his mission, and to evaluate the consequences of his efforts in Mexico.