While waiting to board her flight home at Ronald Reagan Washington national airport recently, Colette Delawalla was reviewing a list of possible impacts from a proposed Trump administration rule on controlling federal money, including grants for research.

Delawalla, the founder of the group Stand Up for Science, had just completed a three-day visit to Capitol Hill, where she met one by one with more than 30 members of Congress, part of a full-court press the organization has launched in recent weeks, sounding the alarm on the office of management and budget (OMB) proposal.