Question juridique clé
Whether the public-law appeal was admissible despite non-payment of the ordered advance on costs.
Solution extraite
No. The appeal was manifestly inadmissible because the appellant failed to pay the required advance within the final deadline.
Motifs extraits
After two orders setting and then extending the deadline, the appellant still did not pay; under the Federal Supreme Court Act, this led to manifest inadmissibility in simplified procedure.