(JNS) — One of the many ways last weekend’s drone and missile attacks on Israel could have been worse: If Iran’s rulers had instructed their U.S.-based operatives to simultaneously carry out a terrorist attack, and our intelligence agencies had failed to learn about it.

Preventing such a catastrophe requires that those intelligence agencies have the ability and authority to surveil—think wiretap—terrorists abroad and their communications with operatives in the United States.

Which gets me to a little good news: Last week, the House, on a bipartisan basis, took a step to ensure that we don’t lo...