I taught my children (homeschooled) to read and write cursive starting around first grade, using Abeka’s curriculum. One of the reasons why was so they could read the original Constitution.
On a different note, I was going through my in-laws ancestry research, and there were some legal documents, wills, land sales, etc. that were really difficult to translate. They did the best they could but had to leave some things blank.
I taught all my children to read and write in cursive, too, and their handwriting was so beautiful. They stopped writing in cursive when they grew older, and now they seem to have forgotten the skill, except for their signatures. IMO, cursive writing is a good skill to master because it’s easy and quick when taking notes.