President Trump set out on his first day in office to free artificial intelligence from government constraints. 15 months later, his own White House is preparing to become a gatekeeper for the most powerful new models on Earth. Why it matters: AI has crossed a threshold that no administration — not even one ideologically committed to staying out of its way — can afford to ignore. It's a sea change in both Silicon Valley and Washington, accelerated by a new class of models that can hunt down c