that is one.
Another is who is going into the first IPO. Troubles for Anthropic IPO would channel all those money into OpenAI's one. Check financial interests of this admin. Hint - they aren't with Anthropic.
Third - most of the export and access controlled tech of the past wasn't productivity multiplier, nor human replacement. AI is a different case - the more capable AI the more its general economic benefit. Export and access control of AI allows you to more and more control the whole domestic and large part of global economy, not just military capabilities like in the past.
Political - coming into elections with "this evil new tech was coming after your jobs, yet we reigned it in and protected your jobs". After all such approach has been for decades working great when it comes to coalminers.
Note that specific bug-finding capabilities of a specific model is a red herring here, and other leading models are almost there, and definitely will be there in a month.
It is all about revenge, money and power.