system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What is the big investigation with Russia attempting to find? And if they find wrong doing by the president what can really be done?
gpt
They are trying to find out if the Trump campaign violated the foreign policy laws.  If they did, as the Nixon campaign violated burglary laws, the President could be impeached by the House.  He would then be tried in the Senate, and if he lost he would be removed from office.  This would "really do" something.