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In page Presidency of Martin Van Buren:

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Van Buren appointed two associate justices of the Supreme Court. Congress had added two new seats on the Supreme Court with the Eighth and Ninth Circuits Act of 1837, but President Jackson had filled only one of those positions. To fill the vacancy, in early 1837 Van Buren appointed Senator John McKinley of Alabama, a key supporter of Van Buren's 1836 presidential campaign. A second Supreme Court vacancy arose in 1841 due to the death of Philip Pendleton Barbour. Van Buren appointed federal judge Peter Vivian Daniel to succeed Barbour.[1] Van Buren also appointed eight other federal judges, all to United States district courts.[2]