There’s a bit of a “live by the sword, die by the sword” situation going on here.

Presidents can’t just ignore a law categorically (although they regularly do, e.g. DACA, DOMA, etc.) On the other hand, presidents can certainly decide not to prosecute a particular entity under a particular law. That’s the heart of the executive power versus the legislative power.

Here, Congress wrote an extremely specific law that applies basically to one company. Which isn’t impermissible. But it’s also not clear to me that Congress can insist on immediate enforcement of that law without crossing effectively usurping the executive power and directing the President to prosecute a specific company at a specific time.