Since signing a nuclear deal with the Obama administration last summer, Iran’s theocratic regime has twice been caught testing ballistic missiles, in one case firing them near a U.S. aircraft carrier in the Persian Gulf. This is a black-and-white violation of the nuclear deal and it carries a prescribed consequence in the form of new punitive sanctions.

In fact, when Congress considered whether to block the deal or allow it to proceed, many nervous Democrats were persuaded by this provision and others like it.