The U.S. naval blockade of Iranian ports in the Strait of Hormuz is taking effect as President Donald Trump demands Iran end its nuclear program. Trump also warns the Chinese Communist Party that if it arms the Iranian regime, it could face a 50 percent tariff. Rep. Eric Swalwell (D-Calif.) has said he will resign his seat in Congress. This comes after he announced he was dropping out of the governor’s race. The decision follows sexual misconduct allegations he denies amid growing calls for accountability. Congress returns to Washington this week after a two-week spring recess. Lawmakers are facing a full agenda of hearings and early moves on key budget and national security priorities.