US President Donald Trump has thrown his support behind House Republican leaders' latest attempt to pass the SAVE America Act, as a revolt among some GOP lawmakers threatens to derail the bill and complicate a broader spending showdown. Trump used a nationwide address to press Congress to approve the legislation, arguing it is needed to tighten election security, but the move places him at odds with fiscal hawks worried about the bill's cost.

While most House Republicans back the measure, some Senate Republicans remain sceptical, citing concerns about how the law would be implemented and its actual impact on election integrity. Fiscal conservatives are also uneasy about the bill's increase to federal spending at a time when the national debt has climbed towards $39 trillion, setting up a tense standoff as House Speaker Mike Johnson tries to secure enough votes to get it passed.