The Tallmadge amendments passed the House of Representatives but failed in the Senate when five Northern senators voted with all the Southern senators. The question was now the admission of Missouri as a slave state, and many leaders shared Thomas Jefferson's fear of a crisis over slaverya fear that Jefferson described as "a fire bell in the night". The crisis was solved by the Missouri Compromise, in which Massachusetts agreed to cede control over its relatively large, sparsely populated and disputed exclave, the District of Maine. The compromise allowed Maine to be admitted to the Union as a free state at the same time that Missouri was admitted as a slave state. The Compromise also banned slavery in the Louisiana Purchase territory north and west of the state of Missouri along parallel 36°30′ north. The Missouri Compromise quieted the issue until its limitations on slavery were repealed by the Kansas–Nebraska Act of 1854.