For example, a government may want to pass a law contrary to its constitution; the constitution may fail to provide a clear answer for a specific situation; the constitution may be clear but it may be politically infeasible to follow it; the government institutions themselves may falter or fail to live up to what the law prescribes them to be; or officials in the government may justify avoiding dealing with a serious problem based on narrow interpretations of the law.
While the United Kingdom of Great Britain and Northern Ireland does not have a codified constitution, it is deemed to have an uncodified one, and issues and crises in the UK and its constituent countries are described as constitutional crises.
This was demonstrated by the XYZ Affair, which involved the bribery of French officials by a contingent of American commissioners who were sent to preserve peace between France and the United States.
[4] The incident was published in the American press and created a foreign policy crisis, which precipitated the passage of the Alien and Sedition Acts.
Such was the case in the United States presidential succession of John Tyler, which established that a successor to the presidency assumes the office without any limitation.