U.S. stock futures were barely budging ahead of the opening bell.
But as the shutdown heads into its 15th day, there are concerns that Washington will struggle to pay all of its bills if a debt resolution isn't reached this week.
Even if the Senate gets a deal, it still needs to win support in the House of Representatives, which is far from certain.
Earnings season picks up Tuesday, with results due before the opening bell from Citigroup (Fortune 500), , Coca-Cola (Fortune 500), , Domino's Pizza ( and )Johnson & Johnson (Fortune 500). , Yahoo (Fortune 500) and , Intel (Fortune 500) are set to report in the afternoon. ,
"The fact that the European markets are all positive even with the looming deadline" of the U.S. government's debt limit is a "sorry perception on the sorry shenanigans of Washington," said Alastair McCaig, market strategist for IG in London.
Most major Asian markets ended the day with modest gains, also based on hopes for a U.S. deal.
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