A large portion of the causes argued by Mr. Webster belong to the province of constitutional law, and have their origin in that partition of powers which exists between the State governments and the government of the United States, each clothed with sovereignty in its appropriate sphere, each subject to limitations resulting from its relations to the other, each possessing its legislative bodies, its judicial tribunals, its executive authorities, and consequently armed with the means of asserting its rights, and both combined into one great political system. In such a system it cannot but happen that questions of conflicting jurisdiction should arise. When we consider that the powers of these two orders of government are defined in written constitutions of recent date, and that all the direct precedents of administration must of necessity, at the oldest, be still more recent, we cannot but wonder at the small number of disputed cases which have arisen, and at the sagacity, forethought, and practical wisdom of the founders of our government, who made such admirable provision for the harmonious operation of the system. Still, however, it was impossible that the class of cases provided for by the appellate jurisdiction of the Supreme Court of the United States should not present themselves, and no small portion of Mr. Webster's forensic life has been devoted to their investigation. It is unnecessary to state that they are questions of an elevated character. They often involve the validity of the legislative acts and judicial decisions of governments substantially independent, as they may in fact the constitutionality of the acts of Congress itself. No court in England will allow any thing, not even a treaty with a foreign government, or the most undoubted principles of the law of nations, to be pleaded against an act of Parliament. The Supreme Court of the United States entertains the question not only of the constitutionality of the acts of the legislatures of States possessing most of the attributes of sovereignty, but also of the constitutionality of the acts of the national legislature, which possesses those attributes of sovereignty which are denied to the States. These circumstances give great dignity to its deliberations, and tend materially to elevate the character of a constitutional lawyer in the United States.[8] Professional training in England has not been deemed the best school of statesmanship; but it will be readily perceived, that in this country a great class of questions, and those of the highest importance, belong alike to the senate and the court. Every one must feel that, in the case of Mr. Webster, the lawyer and the statesman have contributed materially to form each other.