[dragonwriter]

> In fact it's illegal for someone to not accept legal tender.

No, its not illegal not to accept it (that is, the law does not punish failure to accept a tender of payment made in the currency designated as legal tender), however, the tender of payment in such currency may discharge the debt whether or not it is accepted, which would leave the party failing to accept the payment without any recourse through the legal system to collect the debt in the form it would prefer.