oath was declared incapable of holding, in the State, “any office of honor, trust, or profit under its authority, or of being an officer, councilman, director, or trustee, or other manager of any corporation, public or private, now existing or hereafter established by its authority, or of acting as a professor or teacher in any educational institution, or in any common or other school, or of holding any real estate or other property in trust for the use of any church, religious society, or congregation.”

And every person holding, at the time the amended constitution took effect, any of the offices, trusts, or positions mentioned, was required, within sixty days thereafter, to take the oath; and, if he failed to comply with this requirement, it was declared that his office, trust, or position should ipso facto become vacant.

No person, after the expiration of the sixty days, was permitted, without taking the oath, “to practice as an attorney or counsellor-at-law,” nor, after that period could “any person be competent as a bishop, priest, deacon, minister, elder, or other clergyman, of any religious persuasion, sect, or denomination, to teach, or preach, or solemnize marriages.”

Fine and imprisonment were prescribed as a punishment for holding or exercising any of “the offices, positions, trusts, professions, or functions” specified, without having taken the oath; and false swearing or affirmation in taking it was declared to be perjury, punishable by imprisonment in the penitentiary.

Mr. Cummings of Missouri, a priest of the Roman Catholic Church, was indicted and convicted in one of the Circuit Courts of that State, of the crime of teaching and preaching as a priest and minister of that religious denomination without having first taken the oath thus prescribed, and was sentenced to pay a fine of five hundred dollars and to be committed to jail until the same was paid.  On appeal to the Supreme Court of the State the judgment was affirmed, and the case was brought on a writ of error to our court.  It was there argued with great learning and ability by Mr. Montgomery Blair, of Washington, Mr. David Dudley Field, of New York, and Mr. Reverdy Johnson, of Maryland, for Mr. Cummings; and by Mr. G.P.  Strong and Mr. John B. Henderson, of Missouri, the latter then United States Senator for the State.

It was evident, after a brief consideration of the case, that the power asserted by the State of Missouri to exact this oath for past conduct from parties, as a condition of their continuing to pursue certain professions, or to hold certain trusts, might, if sustained, be often exercised in times of excitement to the oppression, if not ruin, of the citizen.  For, if the State could require the oath for the acts mentioned, it might require it for any other acts of one’s past life, the number and character of which would depend upon the mere will of its legislature.  It might compel one to affirm, under oath, that he had never violated the ten commandments, nor exercised his political rights except in conformity with the views of the existing majority.  Indeed, under this kind of legislation, the most flagrant wrongs might be committed and whole classes of people deprived, not only of their political, but of their civil rights.