Earlier quoted context omitted.
It'll be interesting to see what happens. It does sound like this clearly falls under interstate commerce, so within the scope of Fed action. Is there something that makes you think otherwise? Beyond court composition, that is.
From a purely meta point of view: This was something passed by a Democratic administration. Therefore Republicans hate it, and since 2/3 of the Supreme Court is Republican, it's likely to be struck down. The actual reasoning comes later. Something-something-Federalist-Papers-something. I'm sure they'll have no trouble digging up some Founding Father who said something that sounds like banning this, if you squint righ…
When this country was founded, a lot of its residents were slaves, so I'm sure Thomas and Alito will find plenty of fodder in that for their "originalist" stance denying workers rights.