The subject of the poem usually dictates the rhythm or the rhyme and its form. Sometimes, when you finish the poem and you think the poem is finished, the poem says, "You're not finished with me yet," and you have to go back and revise, and you may have another poem altogether. It has its own life to live.
I will, to the best of my ability, preserve, protect and defend the Constitution of the United States. It is not the Constitution as I would like to have it, but as it is, that is to be defended. The Constitution will not be preserved & defended until it is enforced & obeyed in every part of every one of the United States. It must be so respected, obeyed, enforced and defended, and let the grass grow where it may.