Banning American scholars from writing articles or collaborating with counterparts in other countries is such a terminally idiotic form of shooting ourselves in the foot in terms of national competitiveness that it makes no sense to make this a term of receiving R&D grant support.
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NIH Definition of Foreign components. grants.nih.gov/grants/guide...
NIH Funding Opportunities and Notices in the NIH Guide for Grants and Contracts: Reminder Definition of Foreign Components NOT-OD-26-084. NIH