The amendments mentioned in this question are the amendments presented in the Hartford Convention. The Hartford Convention was a series of meetings in 1814-1815 in which the Federalist Party discussed several changes to the political environment of the time. Some of the changes that were proposed were the removal of the three-fifths compromise, the requirement of a two-thirds majority in Congress in order to admit new states, and the creation of laws that restricted trade. However, after the war of 1812, the Federalists lost power. They were no longer considered a major political force, and the amendments fell out of favor.
