Roger B. Taney,
Converse v. United States — Opinion of the Court
“ Undoubtedly, Congress have the power to prohibit the Secretary from demanding or receiving of a public officer any service in any other office or capacity, and to prohibit the same person from accepting or executing the duties of any agency for the Government, of any description, while he is in office, and to deny compensation altogether, if the officer chooses to perform the services; or they may require an officer holding an office with a certain salary, however small, to perform any duty directed by the head of the department, however onerous or hazardous, without additional compensation. ”
