One alternative is national martial law/declaration of emergency. We do sort of have an emergency of random killings for absolutely no reason that pretty much spans the entire country.

I believe there would be majority support in Trump of going extra-legal, ignoring courts and congress, and dragging George Soros into Guantanamo. The normal 2/3 of the country is freaked out about the Charlie Kirk assassination and wants assurance of normalcy. The other 1/3 (lefties) need to wear ankle monitors and obey strict curfew and internet restrictions.