U.S. researchers are encountering new barriers to international collaboration as NIH and NASA quietly impose restrictions on publishing with foreign co-authors. Grant managers at both agencies are privately directing researchers to seek advance approval for any international co-authorship, even when all work occurs within U.S. borders. These measures lack formal public guidance, creating confusion among the scientific community.

The policy shift represents a significant departure from established norms. Historically, 30% of NIH-funded papers included international co-authors without special approval requirements. Now, researchers report being asked to remove published papers from progress reports simply because foreign-affiliated scientists contributed to the work. Some NIH units have redefined "foreign component" to encompass any co-authorship with foreign institution affiliates, regardless of where research took place.

The practical impact is severe. One researcher omitted 16 of 22 papers from an annual report due to foreign co-authors, questioning how agencies can evaluate productivity under these constraints. NASA cites the 2011 Wolf Amendment regarding China collaborations, though interpretations vary widely between agencies. Legal experts note the patchwork approach leaves researchers unable to determine appropriate conduct.

These restrictions threaten the collaborative nature of modern science. While oversight for national security concerns has merit, the broad application risks undermining international research partnerships that drive scientific progress. The informal implementation method compounds uncertainty for researchers trying to comply with evolving expectations.