“The foregoing considerations, whilst pertinent to the examination of the purpose and scope of a naturalization treaty, have a larger aim. It behooves the State to scrutinize most jealously the character of the immigration from a foreign land, and, if it be obnoxious to objection, to examine the causes which render it so. Should those causes originate in the act of another sovereign State, to the detriment of its neighbors, it is the prerogative of an injured State to point out the evil and to make remonstrance; for with nations, as with individuals, the social law holds good that the right of each is bounded by the right of the neighbor. “The condition of a large class of the inhabitants of Roumania has for many years been a source of grave concern to the United States. I refer to the Roumanian Jews, numbering some 400,000. Long ago, while the Danubian principalities labored under oppressive conditions which only war and a general action of the European powers sufficed to end, the persecution of the indigenous Jews under Turkish rule called forth in 1872 the strong remonstrance of the United States. The Treaty of Berlin was hailed as a cure for the wrong, in view of the express provisions of its forty-fourth article, prescribing that in Roumania the difference of religious creed and confessions shall not be alleged against any person as a ground for exclusion or incapacity in matters relating to the enjoyment of civil and political rights, admission to public employments, functions, and honors, or the exercise of the various professions and industries in any locality whatsoever, and stipulating freedom in the exercise of all forms of worship to Roumanian dependents and foreigners alike, as well as guaranteeing that all foreigners in Roumania shall be treated without distinction of creed, on a footing of perfect equality. “With the lapse of time these just prescriptions have been rendered nugatory in great part, as regards the native Jews, by the legislation and municipal regulations of Roumania. Starting from the arbitrary and controvertible premises that the native Jews of Roumania domiciled there for centuries are ‘aliens not subject to foreign protection,’ the ability of the Jew to earn even the scanty means of existence that suffice for a frugal race has been constricted by degrees, until every opportunity to win a livelihood is denied; and until the helpless poverty of the Jew has constrained an exodus of such proportions as to cause general concern.