John McLean, Scott v. Jones Lessee of Detroit Young Men's Society…
“ No serious objection need be made, in my judgment, to the assemblage of the people in convention to form a constitution, although it is the more regular and customary mode to proceed under the sanction of an act of Congress. But until the State shall be admitted into the Union by act of Congress, the territorial government remains unimpaired.No act of the people of a Territory, without the sanction of Congress, can change the territorial into a State government. The constitution requires the assent of Congress for the admission of a State into the Union ”
