Conversation so far:
what was ernie kovacs' tax evasion about?
A frequent critic of the U.S.
tax system, Kovacs owed the Internal Revenue Service several hundred thousand dollars in back taxes.
how did they find out?
His long battles with the IRS.

Question: did he ever have to pay it back?
Self-contained rewrite: Did Ernie Kovacs ever have taxes back to the IRS?