[JGT]

“Does anyone ever stop to think, that a president doesn’t have the authority to close restaurants and businesses in various states? Or do the liberals who bitch about Trump not doing enough not care about federalism, the various units of government, the need for disaster or emergency declaration, among other things?”

You should read every part of this; Trump has the power to go full dictator any time he wants.

https://www.fema.gov/media-library-data/20130726-1650-20490-5258/final__defense_production_act_091030.pdf?fbclid=IwAR2vQ6N1KPBS2OU0qBhso5CSlDwnvUKMI0n6D25i3OIeo-dXI_DBiZkdxo8

[PerConPat]

Here's another Federal aspect to be aware of:

In the rare event that a federal order is issued by CDC, those individuals will be provided with an order for quarantine or isolation. An example of a Quarantine Order for Novel Coronavirus (print-only) pdf icon[PDF – 5 pages] is provided. This document outlines the rationale of the federal order as well as information on where the individual will be located, quarantine requirements including the length of the order, CDC’s legal authority, and information outlining what the individual can expect while under federal order.