A look at where conservative media figure Mark Levin gets his money points to anonymous donors, not just his Fox and radio paychecks — bad news for anyone who wants to know who is paying for political influence.

• Levin makes millions a year from Fox and radio, but most of his income traces back to donor cash from four people whose names are hidden.
• His nonprofit, Landmark, has never handed out a grant and tripled its assets to $17 million in four years, mostly on the back of one $5 million donation the IRS flagged as odd.
• Levin's wife is senior counsel at Stephen Miller's America First Legal, which took a single anonymous $27 million check routed through the Bradley Fund.
• Both are positioned around immigration and border law — she as counsel, he on an advisory board — while the group spends most of its money on political ads.
• Hidden political money jumped from $200 million to $1.9 billion after Trump dropped donor-disclosure requirements, and Republicans in Congress voted down a bill to bring the names back.

Outlook: With disclosure rules gone and the FBI's campaign-finance unit gutted, this money is likely to keep flowing through nonprofits with no names attached.