Key legal question
Whether the Federal Supreme Court should annul the non-entry decisions and order the lower court to hear the appeals despite unpaid advance costs.
Extracted holding
No. The non-entry was lawful because the required advance costs were not paid despite extensions.
Extracted reasoning
Payment of advance costs is generally required; failure to pay after warning and deadline extension leads to the statutory consequence of non-entry. The taxpayer's hope that the dispute would become moot did not excuse payment.