Congress originally devised the oath in July 1862 to exclude pro-southern [[Copperheads]] from government by requiring it be sworn by all federal employees, lawyers and federally elected officials. [[Radical Republicans]] in Congress attempted to apply it to southern voters in the [[Wade-Davis Bill]] of 1864, but Lincoln vetoed it and it never went into effect. [[Andrew Johnson]] also opposed it; he and Lincoln wanted Southerners to swear an oath that '''in the future'' they would support the Union. | Congress originally devised the oath in July 1862 to exclude pro-southern [[Copperheads]] from government by requiring it be sworn by all federal employees, lawyers and federally elected officials. [[Radical Republicans]] in Congress attempted to apply it to southern voters in the [[Wade-Davis Bill]] of 1864, but Lincoln vetoed it and it never went into effect. [[Andrew Johnson]] also opposed it; he and Lincoln wanted Southerners to swear an oath that '''in the future'' they would support the Union. |