The US National Institutes of Health has seen grant applications held up by extra layers of scrutiny.Credit: Mark Wilson/Newsmakers/Getty Hundreds of grant applications to the US National Institutes of Health (NIH) are being held up at any given time by unprecedented scrutiny after peer review. Some have been flagged by an algorithm for using terms, such as ‘gender’ and ‘climate change’, that have been deemed not to conform with the priorities of the administration of US President Donald Trump.