<h1>Senate Republicans push $4.5 trillion tax cut bill despite internal opposition and CBO deficit warnings</h1> The Senate conducted an overnight session as Republican leaders sought support for a comprehensive tax and spending bill before a Friday deadline. The 940-page legislation includes $4.5 trillion in tax cuts, $1.2 trillion in spending reductions primarily targeting Medicaid and food stamps, and $350 billion for border security. Republican leadership faced internal opposition from senators concerned about healthcare cuts and others demanding steeper reductions. The Congressional Budget Office estimated 11.8 million Americans would lose insurance coverage and deficits would increase by $3.3 trillion over a decade. Democrats attempted to delay passage through procedural tactics and amendments.