For 10 points, name this group of Democrats, led by Clement Vallandingham, that opposed the Civil War.
In disgust over this group's control of the Illinois legislature, Joseph Forrest started a rumor linking members of this group to the Knights of the Golden Circle. One member of this group was the subject of an (+) ex parte case that concluded that military courts had no jurisdiction where civil courts still functioned; that man, Lambdin (*) Milligan, was implicated in the "Northwestern Conspiracy." For 10 points, name this group of Democrats, led by Clement Vallandingham, that opposed the Civil War.
In disgust over this group's control of the Illinois legislature, Joseph Forrest started a rumor linking members of this group to the Knights of the Golden Circle.
{Copperheads} [or {Peace} Democrats; or {Butternuts}]