Answer:
the Tenure of Office Act
Step-by-step explanation:
Passed by Congress in 1867, the Tenure of Office Act required that the president could not remove a person from federal office without getting the approval of the Senate. In 1868, Andrew Johnson removed Secretary of War Edwin Stanton from office without the approval of the Senate. The House of Representatives voted to impeach Johnson, and he faced a trial in the Senate in which he was one vote short of being convicted and removed from office.