The Trump administration imposes new sanctions on Iran, prompting Tehran to threaten attacks on oil tankers in the Strait of Hormuz. In South Carolina, Republicans vote in a Senate primary where Trump’s endorsement of Darlene Graham faces scrutiny. California’s highest court reviews a sheriff’s seizure of ballots, while an arbitrator orders The Washington Post to reinstate a fired opinion writer. Additionally, NFL player Daquan Wright returns to college football, and China postpones its lunar mission.