AdvertisementSKIP ADVERTISEMENTYou have a preview view of this article while we are checking your access. When we have confirmed access, the full article content will load.After helping President Trump get elected, Elon Musk was poised to dominate the country’s A.I. policies. Then Mr. Altman sneaked into the White House.OpenAI’s Sam Altman at President Trump’s announcement of the new A.I. infrastructure “Stargate” at the White House last month.Credit...Haiyun Jiang for The New York TimesFeb. 8, ...