Nonessential personnel were moved from Al Udeid Air Base in Qatar, an American site that could be a target of Iran if President Trump ordered an attack on the country.
Sens. Josh Hawley (R-Mo.) and Todd Young (R-Ind.) had voted to advance the proposal last week but flipped Wednesday - amid pressure from Trump - when Senate Foreign Relations Chairman James Risch (R-Idaho) brought up a point of order to block the resolution.