The biggest suspension of civil liberties in the history of the United States was Lincoln suspending the writ of habeas corpus. Habeas Corpus is a legal action, through which a person can seek relief from unlawful detention, or the relief of another person. The writ of habeas corpus protects persons from harming themselves, or from being harmed by the judicial system. Lincoln suspended habeas corpus in order to arrest war protesters under military authority; Lincoln did this because he believed state courts would not punish war protestors properly.
While Lincoln overall was a great president, he clearly did abuse the power of the presidency during the Civil War. Lincoln suspended habeas corpus without the approval of congress and no one