Academic freedom has deteriorated in 50 countries over the past decade — and the erosion has been especially steep in the US.
https://academic-freedom-index.net/
Academic Freedom Index
The Academic Freedom Index (AFI) assesses de facto levels of academic freedom across the world. It is a collaborative effort between researchers at Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), and the V-Dem Institute.
Steve Herman