In July 2009, as the Affordable Care Act moved through Congress, Steny Hoyer, the second-ranking Democrat in the House of Representatives, laughed at the idea that any legislator would actually read the bill before voting on it. If such full-body immersion were necessary to support the A.C.A., he said, “I think we would have very few votes.” In March 2010, just before the law passed, speaker of the House Nancy Pelosi made a similar point. Addressing a national conference of county officials, she declared, “We have to pass the bill so that you can find out what is in it, away…