In mid-1864 General Ulysses S. Grant was greatly concerned about massive draft resistance and the need to send troops northward despite outnumbering General Robert E. Lee at least four to one in Virginia. President Davis in April 1864 sent three commissioners and agents to Canada for the purpose of opening a northern front on the border after freeing Southern prisoners – in hopes of a negotiated peace and independence for the South. It is reported that Lincoln feared losing reelection to a Democrat, and spending the rest of his life in prison for repeated violations of the United States Constitution.
Bernhard Thuersam, www.Circa1865.com The Great American Political Divide
Keeping the Loyal States in Harness
“The slow and bloody progress through Virginia to the James [River], the failure of the first assaults on Lee’s lines around Petersburg, the appearance of [General Jubal] Early before the gates of [Washington, DC], produced a greater sense of disillusionment and of disappointment than had followed Burnside’s  repulse at Fredericksburg or Hooker’s  failure at Chancellorsville. The New York World, which had been exceptionally friendly to the commander in chief, asked on July 11:
“Who shall revive the withered hopes that bloomed on the opening of Grant’s campaign?”
And nine days before Congress had invited the President to appoint a day for national prayer and humiliation. Horace Greeley attempted to open negotiations for peace by meeting Confederate commissioners at Niagara [Falls], and in the middle of July two other semi-official seekers of peace, James F. Jacques and J.R. Gilmore, had gone to Richmond, only to be told by the Southern President:
“If your papers tell the truth, it is your capital that is in danger, not ours . . . in a military view I should certainly say our position is better than yours.”
Greeley, despite the failure of his journey to Niagara, resumed his efforts to end the war, and on August 9, wrote to the President:
“Nine-tenths of the Whole American people, North and South, are anxious for peace – peace on almost any terms – and utterly sick of human slaughter and devastation. I beg you, implore you, to inaugurate or invite proposals for peace forthwith. And, in case peace cannot now be made, consent to an armistice of one year, each party to retain unmolested all it now holds, but the rebel ports to be opened.”
Not only was there this pressure from outside; there was discord within. [Secretary Salmon P.] Chase had resigned, a presidential election was drawing near, and there were outspoken predictions of a Republican defeat. The North was feeling as it had never felt before the strain of prolonged conflict . . . the rumblings of opposition to the draft, which had just become law, were growing daily louder [and] surely Lincoln would have been justified in [opening negotiations] in August, 1864. But what happened?
Early in August the grumblings against the draft had alarmed [General Henry] Halleck, and on the eleventh of that month he told Grant: “Pretty strong evidence is accumulating . . . to make forcible resistance to the draft in New York, Pennsylvania, Indiana, Kentucky, and perhaps some of the other States. The draft must be enforced for otherwise the army cannot be kept up. But to enforce it, it may require the withdrawal of a considerable number of troops from the field . . . ”
Four days later, on the evening of August 15, Grant answered . . . ”If there is any danger of an uprising in the North to resist the draft . . . our loyal governors ought to organize the militia at once to resist it. If we are to draw troops from the field to keep the loyal States in harness, it will prove difficult to suppress the rebellion in the disloyal States. My withdrawal from the James River would mean the defeat of Sherman.”
(A Southern View of the Invasion of the Southern States and War of 1861-65, Capt. S. A. Ashe, Raleigh, NC, 1935 pp. 66-67)