The Supreme Court, of the federal United States, decides Trustees of Dartmouth College v. Woodward, affirming the Article I, Section 10, Clause 3 prohibition against States altering the corporate charters which they have granted:

       [I]t is perfectly clear, that any act of a legislature which takes away any powers or franchises vested by its charter in a private corporation, or its corporate officers, or which restrains or controls the legitimate exercise of them, or transfers them to other persons, without its assent, is a violation of the obligations of that charter.  If the legislature meant to claim such an authority, it must be reserved in the grant.

       [added 2/14/2021] Thanks to Freedom’s Phoenix for this entry.