To the Senate and House of Representatives.
GENTLEMEN: By the act of the 11th of January, 1805, all that part of the Indiana Territory lying north of a line drawn due "east from the southerly bend or extreme of Lake Michigan until it shall intersect Lake Erie, and east of a line drawn from the said southerly bend through the middle of said lake to its northern extremity, and thence due north to the northern boundary of the United States," was erected into a separate Territory by the name of Michigan.
The territory comprised within these limits being part of the district of country described in the ordinance of the 13th of July, 1787, which provides that whenever any of the States into which the same should be divided should have 60,000 free inhabitants such State should be admitted by its delegates into the Congress of the United States on an equal footing with the original States in all respects whatever, and shall be at liberty to form a permanent constitution and State government, provided the constitution and State government so to be formed shall be republican, and in conformity to the principles contained in these articles, etc., the inhabitants thereof have during the present year, in pursuance of the right secured by the ordinance, formed a constitution and State government. That instrument, together with various other documents connected therewith, has been transmitted to me for the purpose of being laid before Congress, to whom the power and duty of admitting new States into the Union exclusively appertains; and the whole are herewith communicated for your early decision.
Andrew Jackson, Special Message Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/201496