How to use "existing" in a sentence

The course here indicated will be followed unless current events and experience shall show a modification or change to be proper, and in every case and exigency my best discretion will be exercised according to circumstances actually existing, and with a view and a hope of a peaceful solution of the national troubles and the restoration of fraternal sympathies and affections.

Whenever they shall grow weary of the existing government, they can exercise their CONSTITUTIONAL right of amending it, or their REVOLUTIONARY right to dismember or overthrow it.

While I make no recommendation of amendments, I fully recognize the rightful authority of the people over the whole subject, to be exercised in either of the modes prescribed in the instrument itself; and I should, under existing circumstances, favor rather than oppose a fair opportunity being afforded the people to act upon it

Beside the monitor was a lighted glass plate against which the visitor was supposed to place his right hand, palm-down, within the existing outline of a hand