8th Amendment

copied from: http://www.archives.gov/exhibits/charters/bill_of_rights.html

Excessive bail shall not be required, nor excessive fines imposed, nor cruel and unusual punishments inflicted.

http://www.cnn.com/2014/04/30/us/oklahoma-botched-execution/
~This article covers the recent botched execution of a man on death row in Oklahoma. The medication wasn't properly administered and the man suffered a heart attack and died an hour later than his scheduled execution. 

The 8^th Amendment allows bail to compromise the need for one to show up for trial while allowing him/her to continue to support a family conduct other business obligations, it cannot be excessive and is proportional to crime and ensure that the accused will return for the trail. Bail is not a right, a judge can deny it for capital (murder) and violent crimes if accused poses a flight risk or other reasons set by law. The 8^th amendment also protects the accused from cruel and unusual punishment.