[tptacek]

I don't think that's true; if you Google "dormant commerce clause", you'll see why. State laws restricting interstate commerce have to have a legitimate interest for that particular state and their interference with interstate commerce has to be outweighed by their benefit.

[dsl]

My point still stands that its up to the state to make the determination, not you or I. Obviously they feel that Square is doing something that they can regulate.

[DenisM]

It's not up to the state. Supreme cour often overrides state laws on the grounds that they interfere with interstate commerce.

Also, the "not you or I" part was unnecessary.