“When the legislative and executive powers are united in the same person, or in the same body of magistrates [government officials], there can be no liberty; because apprehensions [fears] may arise, lest the same monarch or senate should enact tyrannical laws to execute them in a tyrannical manner. . . .”
— Baron de Montesquieu, Spirit of the Laws
What problem (issue) does Baron de Montesquieu identify in this passage?