The correct answer is:
Wade-Davis Bill.
The Wade–Davis Bill (1864) was proposed for the Reconstruction of the South by two Radical Republicans, Senator Benjamin Wade of Ohio and Representative Henry Winter Davis of Maryland.
This bill established that the re-admittance to the Union of former Confederate states could only be granted if a majority in each ex-Confederate state took the Ironclad Oath to declare they had never seconded the Confederacy.
It never took effect because it was pocket vetoed by Lincoln, who wanted to mend the Union by carrying out the Ten percent plan.