U.S. Senators Elizabeth Warren, Tina Smith, and Jeff Merkley sent letters to the CEOs of Microsoft, Google, Amazon, and Meta, requesting that these companies disclose information on tax credits received for AI and data center development, as well as their lobbying efforts prior to the passage of the 2025 Republican tax bill. The letters noted that corporate tax payments are declining; for example, Meta's federal income tax for 2025 is projected to drop to $2.8 billion from $9.6 billion in 2024, despite roughly similar profits. The senators requested a response from the companies by October 12.