Complex sentence: May was eventually released and returned to his seat in Congress in December 1861, and in March 1862 he introduced a bill to Congress requiring the federal government to either indict by grand jury or release all other "political prisoners" still held without habeas.
Split into simpler sentences: May was eventually released and returned to his seat in Congress in December 1861. In March 1862 he introduced a bill to Congress requiring the federal government to either indict by grand jury or release all other "political prisoners" still held without habeas.