Montgomery Blair Sibley, best known for his representation of the late “D.C. Madam” Deborah Jeane Palfrey, had his law license suspended for three years by the D.C. Court of Appeals on Thursday. The court’s decision is a reciprocal disciplinary sanction that stems from a 2008 decision by the Supreme Court of Florida to pull his license in that state for three years.

Sibley’s license was suspended in Florida because he failed to pay more than $100,000 in child support payments and because he repeatedly filed “vexatious and meritless” lawsuits against judges who have been assigned his cases. Sibley has argued that the Florida disciplinary process violated his due process rights and failed to prove that his conduct warranted discipline.