US Senate Republicans were still trying to pass President Donald Trump’s sweeping tax-cut and spending bill early on Tuesday morning, despite divisions within the party about its expected $3.3 trillion hit to the nation’s debt pile.

Dozens of demonstrators rallied outside of U.S. Senator Dave McCormick’s Downtown Pittsburgh office on Monday, asking him to vote no on the Trump administration tax and budget reconciliation bill.

The US Senate is holding a marathon vote on a sprawling budget that is critical to President Donald Trump's agenda, but the spending plan hangs in the balance after weeks of fraught negotiations. Republicans - who control both chambers of Congress - are split over how much to cut welfare programmes in order to extend tax breaks in the One Big Beautiful Bill Act.