WASHINGTON (AP) — Funding for implementing the new health care law and other sticking points remain, but negotiators reported significant progress Tuesday on a $1.1 trillion spending bill to fund the government through September.

“We are looking at narrowing the differences, looking at … how we can compromise without capitulation on both sides,” said Senate Appropriations Committee Chairwoman Barbara Mikulski, D-Md. After a meeting of the four principal negotiators — the top Democrats and Republicans on the House and Senate Appropriations committees — Mikulski was cautiously optimistic of reaching agreement on the massive bill later this week in hopes of a vote next week.