WASHINGTON (AP) — Senate Republicans and Democrats hit an impasse Sunday over spending in their last-ditch struggle to avoid an economy-jarring default in just four days and end a partial government shutdown that’s entering its third week.

After inconclusive talks between President Barack Obama and House Republicans, Senate Majority Leader Harry Reid, D-Nev., and Minority Leader Mitch McConnell, R-Ky., took charge in trying to end the crises, although a conversation Sunday afternoon failed to break the stalemate.