Constructivist Foundation v. DeKalb County Board of Tax Assessors

How later courts describe this case

• upholding bankruptcy court’s sanction against attorney for reasserting arguments made in numerous other pleadings
• bankruptcy judge had jurisdiction to sanction claimant’s attorney since sanction itself was “core” proceeding in which bankruptcy judge could enter final order
• "Although we upheld a bankruptcy court’s imposition of a sanction under § 1927 [in TCI Ltd.] ... we did not discuss the court's jurisdiction to impose the sanction.”