"... the textbooks will call the U.S. a constitutional republic because that's what we are. Do you really think the decision to call us a constitutional republic was made on the basis of the Democrat/Republican labeling that clouds your vision? "

The **decision** to 'correct' the textbooks made by conservatives in Texas was made out of spite for being voted out, and to insert conservative Republican bias into the textbooks fro at least the next 10 years! They want certain words to shine and other words to be put into disrepute. They have admitted as much. Many scholars agree with the analysis I quoted above, and your attempt to reduce the discussion to narrow assertions of your own view doesn't change anything.
My 'vision' is based on 50 years of following BOTH sides of all this and reading and listening. I am quite able to discern the difference between striving for historical accuracy and one-sided
loading of the curriculum with propaganda and subjective flavoring.