“The Brewer invoices are draining NRA cash at mindboggling speed,” North and Childress wrote, adding that the fees “pose an existential threat to the financial stability of the NRA.”

“This is a fiscal emergency,” they continued, “yet we have been unable to get management to engage an outside, independent review to ensure these bills are necessary and reasonable.”

The memo says Brewer charged the NRA $24,324,290 since they engaged him last year, and that some of that had been reimbursed as part of a settlement of litigation against an insurance company—leaving the NRA to pay $18.5 million.

North and Childress estimated that at the current rate, the NRA is racking up nearly $100,000 in legal bills every day—an eye-popping number.