President Obama made his fourth trip to Saudi Arabia Wednesday, ostensibly to “clear the air” in an attempt to repair the damaged relationship with the Kingdom brought about by what many will regard as his administration’s mistakes — cozying up to the Islamic Republic of Iran, for example, and embracing the Arab Spring which toppled the Saudi ally Hosni Mubarak in Egypt. But perhaps the biggest mistake Obama has made with regard to the Saudis is the one they’ll likely thank him for; namely, opposing — and threatening to veto — a bill authored by Sens. John Cornyn and Chuck...