After President Lincoln was assassinated in April 1865 , Congress refused to seat any Representatives or Senators from the South until a reconstruction plan could be carried out . Senator-elect Hahn returned to New Orleans and allied with radical Republicans calling for a convention to revise Louisiana 's Constitution of 1864 to include black suffrage . He was shot and severely wounded on July 30 , 1866 , in the New Orleans Riot
President Lincoln was assassinated
Assassination of Abraham Lincoln
Michael Hahn