The constitution
The constitutional convention occurred second.
Only the States can ratify a constitutional amendment. The President can veto legislation putting the amendment up for ratification, but can be overridden by the normal process in the Senate.
Changes to the written provisions of the constitution can only be made through constitutional amendments.
The US Constitutional provision for the amendments known as the Bill of Rights has been of great importance. The amendment process allows changes to the Constitution when events deem it necessary to make fundamental changes in the laws.
Ratification
The Democratic-Republicans originally called themselves the Anti-Federalists, to emphasize their differences of opinion with the Federalist Party, particularly during the constitutional ratification process.
The ratification of the constitution was signed on May 29, 1790. The ratification process had began three years earlier in Rhode Island.
Yes, the Constitution could be adopted today, although it would require a constitutional amendment process. This process would involve support from two-thirds of both houses of Congress or a constitutional convention called by two-thirds of state legislatures, followed by ratification by three-fourths of state legislatures or state conventions. It is a rigorous process that allows for changes to the Constitution to reflect the needs and values of the present.
Ratification
1787-1789
Proposal and ratification.