@screwd….
Why is requiring the Covid Test legal for those who want to enter the USA?
let’s start with the easiest:
Read the Preamble to the Constitution and when you get to “promote the General Welfare” it is game, set and match.
We have the federal system for the stated reasons in the preamble and societal health falls into the General welfare.
No case citations needed.
Don’t want to take the test, don’t enter the USA, don’t want to wear a mask? Instead of buying cheap seats on Spirit or Jet Blue, try NetJets and charter.