Didn’t the Feds try to make a treaty on migratory birds to overrules state hunting laws since a treaty has the same Supremacy as the Constitution.
Yes. It’s been in force since 1916.
I suppose the sort of scenario I’m trying to think of might be a commerce clause or treaty - if the feds have a law saying “you can shoot up to 5 migratory birds without requiring a license” or “you can fish 10lb of seawater fish without requiring a license” then that might override state law saying otherwise? But most laws say the opposite, like “shooting more than 5 birds in a season requires a federal permit”. The implication being that either (a) the state can add their own permit requirements or (b) the feds have taken jurisdiction abd the state has no right to regulate this aspect of bird business?
The bill of rghts asigns rights - free speech, bare bear arms - but can a federal law assign a right other than these? The only exception I can think of is a treaty, but that seems to be the federal government taking or asserting jurisdiction.
What I am thinking of, is if the federal government for example passed a law asserting the “castle doctrine” or “stand your ground” as a federal law, would that overrule state homicide laws that infringe on that?