At the AAAS Science Conference, US researchers are wondering how policy under US President Donald Trump will affect their research - both in content and financial terms. US President Donald Trump wants to invest in military and infrastructure, he wants to build a wall to Mexico. All this costs money and US scientists fear that this money could be taken out of funds currently designated for research and development. Adding to their concern is the appointment of Scott Pruitt, former Oklahoma Attorney General, as head of the US Environmental Protection Agency (EPA), an organization he has consistently criticized in the past. We spoke about the situation with Cathryn Clüver, a political scientist at Harvard University.