epa03860995 Speaker of the House John Boehner (R) listens as House Majority Leader Eric Cantor delivers remarks during a press conference in the US Capitol in Washington, DC, USA, 10 September 2013. The Obama administration is lobbying Congress to back a limited strike on Syria, saying that they want to degrade Syrian President Bashar al-Assad's delivery systems after he apparently carried out a sarin gas attack on 21 August that killed more than 1,400 people. EPA/SHAWN THEW