certain degree of knowledge of the
subjects on which he is to legislate. A part of this knowledge may be
acquired by means of information which lie within the compass of men in
private as well as public stations. Another part can only be attained,
or at least thoroughly attained, by actual experience in the station
which requires the use of it. The period of service, ought, therefore,
in all such cases, to bear some proportion to the extent of practical
knowledge requisite to the due performance of the service. The period
of legislative service established in most of the States for the more
numerous branch is, as we have seen, one year. The question then may be
put into this simple form: does the period of two years bear no greater
proportion to the knowledge requisite for federal legislation than one
year does to the knowledge requisite for State legislation? The very
statement of the question, in this form, suggests the answer that ought
to be given to it.

In a single State, the requisite knowledge relates to the existing laws
which are uniform throughout the State, and with which all the citizens
are more or less conversant; and to the general affairs of the State,
which lie within a small compass, are not very diversified, and occupy
much of the attention and conversation of every class of people. The
great theatre of the United States presents a very different scene.
The laws are so far from being uniform, that they vary in every State;
whilst the public affairs of the Union are spread throughout a very
extensive region, and are extremely diversified by the local affairs
connected with them, and can with difficulty be correctly learnt in any
other place than in the central councils to which a knowledge of them
will be brought by the representatives of every part of the empire. Yet
some knowledge of the affairs, and even of the laws, of all the States,
ought to be possessed by the members from each of the States. How
can foreign trade be properly regulated by uniform laws, without
some acquaintance with the commerce, the ports, the usages, and the
regulations of the different States? How can the trade between the
different States be duly regulated, without some knowledge of their
relative situations in these and other respects? How can taxes
be judiciously imposed and effectually collected, if they be not
accommodated to the different laws and local circumstances relating to
these objects in the different States?