Article 3, Section 2, Clause 1

Document 16

Federal Farmer, no. 18

As to all federal objects, the union will have complete jurisdiction over them, of course any where, and every where. I still think, that no actions ought to be allowed to be brought in the federal courts, between citizens of different states, at least, unless the cause be of very considerable importance: that no action against a state government, by any citizen or foreigner, ought to be allowed; and no action, in which a foreign subject is party, at least, unless it be of very considerable importance, ought to be instituted in the federal courts--I confess, I can see no reason whatever, for a foreigner, or for citizens of different states, carrying sixpenny causes into the federal courts; I think the state courts will be found by experience, to be bottomed on better principles, and to administer justice better than the federal courts.

The Founders' Constitution
Volume 4, Article 3, Section 2, Clause 1, Document 16
http://press-pubs.uchicago.edu/founders/documents/a3_2_1s16.html
The University of Chicago Press

Storing, Herbert J., ed. The Complete Anti-Federalist. 7 vols. Chicago: University of Chicago Press, 1981.