Before 1906, American food was local and often a lie. Milk was watered, whitened with plaster or dosed with formaldehyde, canned beef fed to soldiers was called embalmed, and patent medicines were laced with morphine and cocaine. Danger could poison a town but not a continent, and Washington treated it as someone else's problem.
The figure of 8,000 infant deaths was a newspaper estimate, not an audited statistic. The embalmed-beef charges were politically charged and disputed at the time, though the public alarm and reform momentum are not.