What is required for the ratification of Constitutional amendments?

The ratification of Constitutional amendments requires approval from three-fourths of the state legislatures or conventions specifically convened for that purpose. This process is established in Article V of the Constitution, which outlines how amendments can be added.

The significance of requiring such a substantial majority among the states is to ensure that any amendment reflects a broad consensus across diverse regions of the country, thus maintaining stability and unity in governance. This extensive requirement makes it challenging to alter the Constitution and encourages careful consideration and widespread agreement among the states before any changes are made, thereby protecting the core principles of the Constitution.

The other processes mentioned, such as a two-thirds majority in Congress or a simple majority in both the House and Senate, pertain to the proposal stage of amendments but do not fulfill the ratification requirements. A presidential signature is not necessary for constitutional amendments, as the power lies predominantly with the state legislatures or state conventions.