But another struggle on the same point ensued when our victorious armies returned from Mexico and it devolved on Congress to provide for the territories acquired by the treaty of Guadalupe Hidalgo. The great relations of the subject had now become distinct and clear to the perception of the public mind, which appreciated the evils of sectional controversy upon the question of the admission of new States. In that crisis intense solicitude pervaded the nation. But the patriotic impulses of the popular heart, guided by the admonitory advice of the Father of his Country, rose superior to all the difficulties of the incorporation of a new empire into the Union. In the counsels of Congress there was manifested extreme antagonism of opinion and action between some Representatives, who sought by the abusive and unconstitutional employment of the legislative powers of the Government to interfere in the condition of the inchoate States and to impose their own social theories upon the latter, and other Representatives, who repelled the interposition of the General Government in this respect and maintained the self-constituting rights of the States. In truth, the thing attempted was in form alone action of the General Government, while in reality it was the endeavor, by abuse of legislative power, to force the ideas of internal policy entertained in particular States upon allied independent States. Once more the Constitution and the Union triumphed signally. The new territories were organized without restrictions on the disputed point, and were thus left to judge in that particular for themselves; and the sense of constitutional faith proved vigorous enough in Congress not only to accomplish this primary object, but also the incidental and hardly less important one of so amending the provisions of the statute for the extradition of fugitives from service as to place that public duty under the safeguard of the General Government, and thus relieve it from obstacles raised up by the legislation of some of the States.