What really happened inside Donald Trump’s explosive Capitol Hill GOP luncheon? After a heated clash with Senator Bill Cassidy over Iran war powers, Trump’s pressure campaign appeared to pay off as key Republican votes shifted and the Senate rejected a war powers resolution. From the Cassidy showdown and Rand Paul’s surprise move to Trump’s victory lap declaring “This vote puts Iran on notice!”, here’s how a closed-door lunch became a major test of Trump’s grip on the Republican Party and U.S. policy toward Iran. Show more Show less