Senate Republicans are hoping to vote on the massive $4 trillion tax cut legislation as early as Saturday despite opposition from several of their members.

The Senate plans to hold a key test vote on President Trump's "big, beautiful bill" later Saturday, even as it's unclear whether the tax and spending measure has enough support to lift it over the hurdle.

Republican leaders advance their modified version of Trump's bill, despite resistance from conservatives and moderates over Medicaid changes and other divisive policy tweaks.