Final answer:
Habeas Corpus can be suspended only in cases of rebellion or invasion where public safety may be at risk, as it was during the Civil War under President Lincoln's administration.
Step-by-step explanation:
The only time when Habeas Corpus can be suspended is in circumstances of extreme urgency, such as during a rebellion or invasion when public safety may be at risk. This constitutional privilege is a safeguard designed to ensure that individuals are not unlawfully detained without being informed of the charges against them and that they have the opportunity to challenge the legality of their detention in a court of law. The Habeas Corpus Suspension Act, enacted during the Civil War, is an example of a rare instance when this suspension occurred, allowing President Lincoln to detain suspected Confederate operatives.