The most likely support for the cause of the Palmer Raids was to protect the United States from destructive forces.
These were a wave of arrests that the U.S. Justice Department conducted under the leadership of U.S. Attorney General, A.M. Palmer.
The aim of these raids were to arrest and deport Communists, Anarchists, and Radical Leftists who were aliens(weren't American citizens). These people had been accused of plotting to overthrow the U.S. government.
In conclusion, the Palmer Raids were done to protect the U.S. much like was said in the discussion about aliens in the given documents.
Find out more on the Palmer Raids at https://brainly.com/question/904532.
