The U.S. Supreme Court confirmation process and how it devolved into highly charged partisan battles is the focus of a new investigative documentary—”Supreme Revenge”—airing Tuesday night on PBS’s Frontline program.

The film contends the failed 1987 nomination of President Ronald Reagan’s nominee, Judge Robert Bork, spurred a desire for revenge by U.S. Sen. Mitch McConnell, R-Kentucky, who warned that Democrats would “rue the day” for what he considered was an unfair attack on Bork’s conservative ideology.