what country sent a list to usa banning people from fifa who didnt pay child support

It was Argentina that reportedly sent the list to U.S. authorities, asking that people with unpaid child support be barred from World Cup matches in the U.S.

Quick context

The reports say Argentina compiled names of about 13,000 parents who had not paid child support and wanted them blocked from attending matches.
The story has been widely described as an unusual enforcement move tied to the 2026 FIFA World Cup.

In plain terms

• Country: Argentina.
• Issue: unpaid child support.
• Requested outcome: keep those people out of World Cup stadiums in the United States.

One-line answer

Argentina.