Martin Van Buren was appointed.
A recess appointment is the appointment , by the President of the United States , of a senior federal official while the U.S. Senate is in recess .. President of the United States. President of the United States. U.S. Senate. United States Senate. recess. recess ( motion ). The United States Constitution requires that the most senior federal officers must be confirmed by the Senate before assuming office , but while the Senate is in recess the President may act alone by making a recess appointment to fill `` Vacancies that may happen during the Recess of the Senate . ''. recess. recess ( motion ). United States Constitution. United States Constitution. To remain in effect , a recess appointment must be approved by the Senate by the end of the next session of Congress , or the position becomes vacant again ; in current practice this means that a recess appointment must be approved by roughly the end of the next calendar year .. recess. recess ( motion ). Recess appointments are authorized by Article II , Section 2 of the U.S. Constitution , which states  :