Final answer:
A. Mitchell Palmer, as the Attorney General during the Red Scare, led the controversial Palmer Raids, resulting in the arrest and deportation of suspected radicals without due process, actions which ultimately undermined his career.
Step-by-step explanation:
The Palmer Raids and A. Mitchell Palmer
During the Red Scare of 1919-1920, A. Mitchell Palmer, the Attorney General in the Wilson administration, conducted a series of activities known as the Palmer Raids. These were aimed at rounding up and arresting suspected radicals, including socialists, communists, and anarchists. Operating under the fear of a potential communist revolution analogous to that which had occurred in Russia, Palmer, with assistance from J. Edgar Hoover, initiated controversial surveillance and enforcement tactics.
These actions led to thousands of arrests, with many individuals detained without due process and hundreds deported without trial. The Federal Government's response during the Red Scare incorporated both legitimate and extralegal measures to confront the perceived threat of radicalism, leading to significant criticism of Palmer and eventually contributing to the demise of his political career.