WASHINGTON (AP) — The Senate is slogging through a tense overnight session that has dragged into Tuesday, with Republican leaders buying time as they search for ways to secure support for President Donald Trump’s big bill of tax breaks and spending cuts while fending off proposed amendments, mostly from Democrats trying to defeat the package.

Thune declared at one point they were in the “homestretch” as he dashed through the halls at the Capitol, only to backtrack a short time later, suggesting any progress was “elusive.”

At the same time House Speaker Mike Johnson has signaled more potential problems ahead, warning the Senate package could run into trouble when it is sent back to the House for a final round of voting, as skeptical lawmakers are being called back to Washington ahead of Trump’s Fourth of July deadline.