The Confederate states would be required to uphold the 13th Amendment, which abolished slavery; swear loyalty to the Union; and pay off their war debt. Then they could re-write their state constitutions, hold elections, and begin sending representatives to Washington. Under the plan, Confederate leaders would have to apply directly to President Johnson in order to request pardon. Johnson issued over 13,000 pardons during his administration, and he passed several amnesty proclamations. The last one, issued Christmas Day 1868, granted sweeping pardons to former Confederates, including former Confederate President Jefferson Davis.