Gentlemen of the Senate:
The governor of the Western territory has made a statement to me of the reciprocal hostilities of the Wabash Indians and the people inhabiting the frontiers bordering on the river Ohio, which I herewith lay before Congress.
The United States in Congress assembled, by their acts of the 21st day of July, 1787, and of the 12th August, 1788, made a provisional arrangement for calling forth the militia of Virginia and Pennsylvania in the proportions therein specified.
As the circumstances which occasioned the said arrangement continue nearly the same, I think proper to suggest to your consideration the expediency of making some temporary provision for calling forth the militia of the United States for the purposes stated in the Constitution, which would embrace the cases apprehended by the governor of the Western territory.
George Washington, Special Message Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/202199