WASHINGTON (AP) — The bipartisan infrastructure deal senators brokered with President Joe Biden is hanging precariously ahead of a crucial Wednesday test vote as senators struggle over how to pay for nearly $1 trillion in public works spending.

Tensions were rising Tuesday as Republicans prepared to block the vote, mounting a filibuster over what they see as a rushed and misguided process. With Biden preparing to hit the road to rally support for his big infrastructure ideas — including some $3.5 trillion in a follow up bill — restless Democrats say it's time to at least start debate on this f...