The phrase "potential collusion" means there is a possibility of people secretly working together to deceive or cheat others for their own benefit. Full definition
Stone is currently under scrutiny in multiple investigations into potential collusion between Trump associates and Russian officials during the 2016 presidential election. (businessinsider.com)
President Donald Trump criticized Attorney General Jeff Sessions on Wednesday due to Sessions's decision to recuse himself from overseeing the Justice Department's investigation into potential collusion between Trump's presidential campaign and Russia. (fortune.com)
Mueller is investigating alleged Russian attempts to influence the 2016 U.S. presidential election and potential collusion by Trump aides. (fortune.com)