Sen. Elizabeth Warren (D-Mass.) said six companies received $83 billion in federal tax breaks in 2025 while Americans struggled with grocery and doctor-visit costs, and urged regulators to block mega-mergers over the broader influence of concentrated corporate power. An Institute on Taxation and Economic Policy report said the companies accounted for more than 40% of tracked corporate tax breaks and received benefits exceeding the annual discretionary budget of the U.S. Department of Education. Warren has cited UnitedHealth Group Inc. and CVS Health Corp. as examples of vertical integration and backed the bipartisan Patients Before Monopolies Act, which would prohibit common ownership of pharmacy benefit managers and pharmacies.