Justice Against Corruption on K Street Act or the JACK Act This bill amends the Lobbying Disclosure Act of 1995 to require any listed lobbyist who was convicted in a federal or state court of an offense involving bribery, extortion, embezzlement, an illegal kickback, tax evasion, fraud, a conflict of interest, making a false statement, perjury, or money laundering, to provide the date of the conviction and a description of the offense in the registration and in quarterly reports.