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From the Rachel Maddow Show

Sen. Ron Johnson, R-Wis., speaks during the Senate Special Committee on Aging hearing.
Sen. Ron Johnson, R-Wis., speaks during the Senate Special Committee on Aging hearing titled "Modernizing Health Care: How Shoppable Services Improve Outcomes and Lower Costs," in Hart building on Oct. 22, 2025. Tom Williams / Tom Williams/CQ-Roll Call, Inc via Getty Images

GOP’s Ron Johnson backs book touting fringe treatment for autism and cancer

“It is all lunacy. Absolutely, it’s 100% nonsense,” one expert said about a weird theory the Wisconsin senator endorsed.

Steve Benen is a producer for "The Rachel Maddow Show," the editor of MaddowBlog and an MS NOW political contributor. He's also the bestselling author of "Ministry of Truth: Democracy, Reality, and the Republicans' War on the Recent Past."