A “red-green alliance” of Marxist and Islamist groups works together with foreign governments as it seeks to weaken America by disrupting everyday life, even our democratic process. And they do so in the name of any cause under the sun.

That was the gist of the testimony I was asked to give last week by a subcommittee of the House of Representatives. It drives the Left wild, but the evidence that what I like to call the omnicause is too strong to ignore.