Supreme Court Justice Anthony Kennedy isn't known for his judicial modesty. But for sheer willfulness, [Thursday's] 5-4 majority opinion in Boumediene v. Bush may earn him a historic place among the likes of Harry Blackmun. In a stroke, he and four other unelected Justices have declared their war-making supremacy over both Congress and the White House.
Boumediene concerns habeas corpus – the right of Americans to challenge detention by the government. Justice Kennedy has now extended that right to non-American enemy combatants captured abroad trying to kill Americans in the war on terror. We can say with confident horror that more Americans are likely to die as a result.