Senator Bernie Sanders says 'many Americans unaware' of US support for Saudi-led coalition against Houthi rebels. US legislators have submitted a draft resolution calling for an end to US military support for the Saudi-led coalition in Yemen's war. The draft resolution, unveiled on Wednesday, is being pushed forward by Senators Bernie Sanders, Mike Lee and Chris Murphy. The bill intends to exploit a powerful but rarely activated provision in a 1973 law - the War Powers Act - that gives Congress the authority to overrule the president and withdraw troops if the former believes the conflict is not authorized. The UN said the country is facing the "worst humanitarian crisis in the world".