US Senators have spent more than 24 hours negotiating amendments to a mega-bill on tax and spending that appears to have stalled without enough votes to pass. Four Republicans in the Senate have said they cannot support the nearly 1,

With Sens. Rand Paul and Thom Tillis opposed to the package, GOP leaders can afford only one more defection. And multiple Republicans aren't yet sold on the measure.

By LISA MASCARO, MARY CLARE JALONICK and MATT BROWN WASHINGTON (AP) — The Senate is slogging through a tense overnight session that has dragged into Tuesday, with Republican leaders