The National Institutes of Health (NIH) instituted a new policy limiting the number of applications it will consider per principal investigator (PI) per calendar year. It also issued guidance to researchers about the appropriate use of artificial intelligence (AI) in its research application process.
See the original announcement, NOT-OD-25-132: Supporting Fairness and Originality in NIH Research Applications.
Read more in an article from Science: "Fearful of AI-generated grant proposals, NIH limits scientists to six applications per year."