I don't think any American Monarchist (I am one) considers monarchy a possibility for America presently.
What an interesting statement! Presently? When then? What circumstances would bring your fantasy of a Monarchy to fruition?
That is the question of the day, isn't it? For those good conservative American Catholics who's expressed a preference for monarchy over a constitutional republic, but say the conditions aren't right for one, do you vote and practice your religion like you want to delay the onset of your preferred monarchy, or like you want to hasten it?
We may be closer to a feudal society than we realize. That is because a collapse of the oversized and today barely governable state is likely to bring about feudalism. That is not yet monarchy, but rather feudalism is a natural order in absence of a state when people make up their own law enforcement contracts with private parties, and therefore nobility emerges. Monarchy arises from feudalism when one of the bigger feudals assumes that role in order to prevent a national fragmentation and take care of national goals. Note that in Europe the formation of monarchies took centuries because medieval Europe had no national sense yet, whereas the American nation is well-formed.
By the way, some expect a dictatorship to arise when a sitting president suspends the Constitution, but that state of affairs is not monarchy, and usually leads to a re-establishment of a republic when things calm down.