The failed execution of Christa Pike, which left her clinging to life in Tennessee, was the latest grisly error to take place in an American execution chamber.

© Denny Simmons / The Tennessean/USA TODAY NETWORK, via Reuters

The failed attempt with Christa Pike has intensified bipartisan concerns about Tennessee’s ability to effectively carry out lethal injections.

© Denny Simmons/The Tennessean, via USA TODAY NETWORK, via Reuters