Senate Parliamentarian Elizabeth MacDonough dealt big-time blows to GOP priorities this weekend when she ruled that chunks of President Trump's "big, beautiful bill" violate the chamber's rules. Why it matters: The so-called "Byrd bath" rulings further complicate Majority Leader John Thune's path to passing the mega tax and spending cut package by the White House's July 4 deadline.

President Donald Trump had previously set a July 4 deadline for Congress to pass his sweeping tax and spending package, known as the "One Big Beautiful Bill Act," and deliver it to his desk for signing.

Trump's signature legislation comes with a price tag in the neighborhood of $3 trillion. They're all wrong, the White House says.