After a marathon overnight session, the U.S. Senate advanced a key piece of legislation to unlock President Donald Trump's legislative agenda early Saturday morning. The resolution approved 51-48 will be the blueprint for a massive party-line bill that Republicans hope to pass without Democrats' help through a process known as "reconciliation.

Senate GOP leaders took a key step toward advancing President Donald Trump’s multi-trillion-dollar agenda in Congress — simultaneously setting off an intraparty war over how to pay for it.

The Senate voted 52-48 to begin debate on a multitrillion-dollar plan that would cut taxes, boost spending for immigration enforcement and the military and raise the debt limit.