Kentucky Senator Rand Paul has had better weeks. On Monday, he suggested there could be a link between vaccines and autism in a CNBC interview. Later on in that interview, he actually shushed—as in, pressed one finger to his lips—the female CNBC anchor. On Tuesday, a New York Times article linked him to a medical group that promotes anti-vaccine theories. But Paul’s dumbest comments came in Iowa on Friday night—and they show why Paul has the most dangerous economic views of any presidential candidate.

Speaking in front of more than 150 Iowa activists, Paul ripped into the Federal Reserve and promoted his “Audit the Fed” bill, which he introduced earlier this week. “I think there needs to be some sunshine,” he said, according to reports of the event. “I’m going to fight ’em, and we’re going to get a vote on audit the Fed.” I’m not sure if Paul will get that vote—ultimately, that’s up to Senate Majority Leader Mitch McConnell. But I do know that “Audit the Fed” is a terrible idea. First, the Fed already is extensively audited by the Government Accountability Office (GAO), the Office of the Inspector General (OIG) and even private sector auditors like Deloitte. Each week, the central bank also releases its balance sheet and even has an interactive guide of its balance sheet available for further explanation.

However, the GAO and OIG audits exclude a few parts of the Fed’s policymaking, including transactions by the Federal Open Market Committee. Paul’s bill removes those exclusions and requires “recommendations for legislative or administrative action" from the Comptroller General. Sounds innocuous, right? It’s not. That would significantly damage the Fed’s independence, which exists so that politicians cannot influence the central bank for their own political purposes. In other words, “Audit the Fed” would lead legislators to interfere with monetary policy matters and put the entire economy at risk. For further explanations why the legislation is so dangerous, see the Roosevelt Institute’s Mike Konczal and the Washington Post’s Catherine Rampell.

With President Barack Obama in office, Paul’s legislation stands no chance of becoming law. It’s hard to imagine it overcoming a filibuster in the Senate, and even if it did, the president would veto it. If Paul were to win the presidency, "Audit the Fed" would still face long odds in the Senate since, even in the best case scenario, Republicans likely won’t have a filibuster-proof majority in the next Congress. So while “Audit the Fed” is theoretically dangerous, it’s not much of an actual threat to Fed independence.

But a Paul presidency would still have disastrous effects on the U.S. economy, for other reasons that were on wide display in Iowa on Friday night.