Questão jurídica principal
Whether the conditions for revising and revoking the helplessness allowance were met.
Decisão extraída
No. The prerequisites for revision were not satisfied, and no reopening ground justified ending the ongoing benefit.
Fundamentação extraída
The cantonal court correctly found that neither Article 17 ATSG nor, alternatively, Article 53 ATSG provided a basis to revoke the benefit. The Federal Supreme Court endorsed that reasoning.