He delayed enforcement of it for 75 days while they take time to interpret the law.

It's even mentioned in the article!

> Still, the regulatory outlook for AI remains somewhat uncertain as Trump on Monday overturned the 2023 order signed by then-President Joe Biden to create safety standards and watermarking of AI-generated content, among other goals, in hopes of putting guardrails on the technology’s possible risks to national security and economic well-being.