Actually don't requirements like this that constrain vendor dealings outside of the two parties risk running afoul of existing "restraint of trade" antitrust l

Actually don't requirements like this that constrain vendor dealings outside of the two parties risk running afoul of existing "restraint of trade" antitrust laws? Or perhaps Wal-Mart is taking a calculated risk that this adminstration isn't going to pursue much along these lines anyway. Still it seems like Amazon itself could pursue damages directly if it desired (I'm no lawyer though..).