Answer:
The correct answer is: No, it is not legal.
Explanation:
The Fair Debt Collection Practices Act (FDCPA) is a federal law that prohibits debt collectors from using abusive, unreasonable, or misleading money-recovery methods. That is meant to protect debtors from harassment or intimidation.
Collectors cannot present themselves as law enforcement or government officials, they cannot call people at work or multiple times at home or during out hours, they cannot pass off papers as legal documents when they are not, they cannot arrest you, or lie in any way.
Thus, Sekelow has violated the FDCPA by sending debtors postcards requesting contact from their end.