China is exploiting partnerships with U.S. researchers funded by the Department of Energy to provide the Chinese military with access to sensitive nuclear technology and other innovations with economic and national security applications, according to a congressional report published Wednesday.

The authors of the report say the U.S. must do more to protect high-tech research and ensure that the results of taxpayer-funded work don’t end up benefiting Beijing. They recommended several changes to better protect scientific research in the U.S., including new policies for the Department of Energy to use when deciding whether to fund work that involves Chinese partnerships.

The investigation is part of a congressional push to raise a firewall blocking U.S. research from boosting China’s military buildup when the two countries are locked in a tech and arms rivalry that will shape the future global order.