The agency's move sets a low bar for future approvals of genetically engineered animals for human consumption.
Senators were questioning why the Defense Department was restricting a government watchdog. Now there are criminal investigations and questions about retaliation.
Chris Mooney is the author of four books, including "The Republican War on Science" (2005). His next book, "The Republican Brain: The Science of Why They Deny Science—and Reality," is due out in April.