According to the quotation, why does Stevens believe that Johnson should be removed from office

When Andrew Johnson took upon himself the duties of his high office, he swore to obey the Constitution, and take care that the laws be faithfully executed that, indeed is, and has always been the chief duty of the President of the United States, the duties of legislation, and making a judgment on the laws of his country, fall in no way to his lot, to obey the commands of Sovereign power of the nation that others should obey Them was his whole duty a duty which he cannot escape in any attempt to do so, would be in direct violation of his official oath.

Based on the given quotation, Stevens believes that Johnson should be removed from office because he believes Johnson has violated the Constitution and failed to faithfully execute the laws. Stevens argues that the President's main duty is to obey the commands of the nation's sovereign power and to ensure others obey them as well. Stevens suggests that any attempt to evade this duty would be a direct violation of Johnson's official oath.

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