In 1926, Taft wrote for a 6–3 majority in "Myers v. United States" that Congress could not require the president to get Senate approval before removing an appointee. Taft noted that there is no restriction of the president's power to remove officials in the constitution. Although "Myers" involved the removal of a postmaster, Taft in his opinion found invalid the repealed Tenure of Office Act, for violation of which his presidential predecessor, Andrew Johnson, had been impeached, though acquitted by the Senate. Taft valued "Myers" as his most important opinion.