The lawmakers suggested the companies used contributions to “cozy up” to President-elect Donald Trump’s administration to avoid regulatory scrutiny.

The CEO of OpenAI, Sam Altman took to his social media account on X (formerly Twitter) to share his thoughts about a letter of inquiry he received from Senators Elizabeth Warren and Michael Bennet. The letter raised questions about the motivations behind his donation to the incoming president’s inaugural fund.

In a follow-up post, Altman wrote, “It was a personal contribution as you state; i am confused about the questions given that my company did not make a decision.”