The Tuttle Capital Government Grift ETF — ticker GRFT — is designed to target firms with apparent ties to Washington powerbrokers, from cabinet officials to stock-trading lawmakers. Yet no major exchange has agreed to list it, according to Matt Tuttle, chief executive of Tuttle Capital. Bloomberg's Isabelle Lee discussed the story on "Bloomberg ETF IQ" with Scarlet Fu, Katie Greifeld and Eric Balchunas. (Source: Bloomberg)