Barack Obama summons leaders for US debt ceiling crisis talks

President Barack Obama called top congressional leaders to White House on Monday, stepping up efforts to stave off the rising threat of a historic US debt default that would rock the global economy.

Obama warns of `economic shutdown` as debt deadline approaches

Faced with looming prospect of debt default, President Barack Obama appealed to Congress to pass budget while pushing Republicans to agree to hike borrowing limit to prevent an "economic shutdown".

Obama says will not `pay a ransom` to end shutdown crisis

Warning that economic shutdown would be "dramatically worse", US President Barack Obama appealed to opposition to pass federal budget with no partisan strings attached.