Constitutional Crisis: A situation where there is a conflict between different branches of government or a disagreement over the interpretation of the Constitution.
Checks and Balances: The system in which each branch of government can limit, or 'check,' the power of other branches to prevent any one branch from becoming too powerful.
Impeachment Process: The series of steps outlined in the Constitution for investigating and potentially removing public officials (such as presidents) from office due to wrongdoing.