Mark Cuban walked into the Senate with spreadsheets and receipts. He called PBMs a cartel. He saved Medicare $2 billion. But math doesn't show up at town halls. Receipts don't vote. Here's the hole in his equation and an invitation to fix it.

Mark Cuban got Optum CEO Patrick Conway on record supporting healthcare price transparency. That public commitment opens the door to harder questions about PBMs pharmacy closures and drug pricing abuses. Transparency was step one. Accountability comes next.