text: Registration and placement in concentration camps based on national origin was last done by Franklin Delano Roosevelt.  
  
  After an attack which killed about the same number of citizens as occurred  on 9-11.
  
  Primarily those of Japanese national origin, but a fair number of Germans wound up registered and detained as well.
  
  Before that, it was President Woodrow Wilson who investigated and detained Germans in the US.
  https://en.wikipedia.org/wiki/Internment_of_German_Americans