The most accurate response is: Meade was blamed for allowing the Confederates to retreat to Virginia.
While General Meade achieved a significant victory at Gettysburg, his failure to pursue and decisively defeat Robert E. Lee's army after the battle led to criticism. Lincoln and others felt that this missed opportunity allowed the Confederates to regroup, and this dissatisfaction contributed to Lincoln's decision to appoint Ulysses S. Grant as the overall commander of Union forces.