The Internal Revenue Service should consider revoking the National Rifle Association’s status as a nonprofit organization in light a recent report that the group has enriched its executives at the expense of its 5 million members, a Democratic congressman said Thursday.

Rep. Brad Schneider addressed a letter to the commissioner of the IRS asking the agency to interrogate whether the NRA has misappropriated member dues into the pockets of a small group of executives in a series of sweetheart deals.

The NRA did not immediately reply to a request for comment.

Schneider raised concerns about what he described as the NRA’s “self-dealing, deceptive billing practices, and preferences in contracting,” citing an April investigation by The Trace published in The New Yorker.

If the IRS were to no longer recognize the powerful gun lobby as a tax-exempt social welfare organization, the group would likely not survive, according to tax experts cited in the story.