Research universities and hospitals are pushing back against a federal agency’s proposal to boost oversight of investigations related to fraud and plagiarism, even as many face questions over the credibility of their scientists’ work. The Office of Research Integrity, part of the U.S. Department of Health and Human Services, oversees more than $40 billion in research funds and is calling for more transparency in research-misconduct investigations. The recommended changes come amid high-profile cases at schools including Stanford University, Harvard Medical School and the University of Rochester.