Elizabeth MacDonough, Senate parliamentarian. Govinfo.gov Progressive Democrats went through the roof. Sen. Bernie Sanders said, “I regard it as absurd that the parliamentarian, a Senate staffer elected by no one, can prevent a wage increase for 32 million workers.” But MacDonough was just carrying out her procedural duties to advise the Senate leaders about what the body’s rules and precedents allow – and what they don’t. And as the author of two books about Congress – “Congressional Practice and Procedure” and “The Polarized Congress” – I know that the parliamentarian’s rulings can be key to passage of legislation. Low-key office