The $550 billion bipartisan infrastructure bill “is a historic win for our nation’s everyday families and employers and, like every proposal, should be considered on its own merits,” said Sinema spokesman John LaBombard. “Proceedings in the U.S. House will have no impact on Kyrsten’s views about what is best for our country – including the fact that she will not support a budget reconciliation bill that costs $3.5 trillion.”

It’s the latest entrenched position from the first-term moderate, whose resistance to changing the Senate’s filibuster rules and to supporting a $3.5 trillion spending bill is enraging progressives. Sinema and Manchin both helped pass Democrats’ budget earlier this month, setting up that gargantuan spending bill, but both are resistant to a social spending package that ultimately meets its $3.5 trillion top line mark.

Sinema in particular specifically opposes that spending goal, which was devised by Senate Budget Chair Bernie Sanders (I-Vt.). Senate Democrats need all 50 of their members, including Manchin and Sinema, to pass a filibuster-proof reconciliation spending bill.