In a front page story about a major FBI terrorism investigation, The Washington Post has reported that the targets include “Chicagoans who crossed paths with Obama when he was a young state senator and some who have been active in labor unions that supported his political rise.” The implication is that the trail could lead to the White House. This is an unusual investigation that does not primarily involve Islamists. Instead, it is focused on elements of the old international communist networks that many people mistakenly thought had faded away with the collapse of the Soviet Union. Those under investigation...