The idea of reconvening the Continental Congress to nullify a current leader in the United States illustrates a few misunderstandings about the structure and history of U.S. governance. The Continental Congress was an assembly of delegates from the Thirteen Colonies that met during and after the American Revolution, primarily to coordinate responses to British policies and eventually to declare independence. Its role was succeeded by the Congress established under the Articles of Confederation, and later the current United States Congress under the Constitution of 1789.
In contemporary terms, the United States operates under a Constitution with established processes for governance, which includes elections, the separation of powers, and the checks and balances system. There is no provision for reconvening the Continental Congress, a body that ceased to exist in its original form once the U.S. Constitution was ratified.
Furthermore, the United States has a democratic process for addressing leadership issues, such as elections every four years for president and, potentially, impeachment proceedings if the sitting president is believed to have committed “high crimes and misdemeanors.” The Constitution provides the legal framework for these processes, and any change to this framework would require a constitutional amendment, a process involving both Congress and the states.
There is no mechanism for “nullifying” a president outside of these constitutional avenues. Similarly, the U.S. does not have a monarchy or “king,” as the question implies; it is a democratic republic with elected representatives.
To address issues with leadership promptly, citizens and officials can engage in lawful political processes, advocacy, and elections. Given the complexity and existing frameworks, efforts to make constitutional changes or propose significant alterations to governance would require significant time and consensus-building.