In one of his first major announcements as health secretary, Robert F. Kennedy Jr. called a news conference to unveil a plan to “phase out” synthetic food dyes. Food and Drug Administration Commissioner Marty Makary opened the event by saying his agency was “removing all petroleum-based food dyes" from U.S. foods. But the specifics did not become clear until the final minutes, when Kennedy revealed that the government had “an understanding” with foodmakers to voluntarily stop using the chemicals. A “national standard and timeline” for completing the process would soon follow, according to an FDA statement. More than a year later, the FDA has not introduced any of the detailed, scientific regulatory documents needed to establish a safety issue with the half-dozen widely used dyes. Instead, the FDA maintains an online list of manufacturers that have pledged to phase out the chemicals. The administration’s handling of food dyes reflects its approach to a number of health priorities.…