Well any kind of hacking done by a foreign power on government officials to get information that can hurt them getting elected should be considered as a serious offence, and cast serious doubts on the legitimacy of his presidency.
This might snow ball I'm hoping if not impeachment is just around the corner if Trump don't divest himself of all business interest. And give a full disclosure of funds and tax information to the American public as is only proper to avoid any conflict of interest in running the US government.