The National Labor Relations Board (NLRB) is asking the public to weigh in on whether it should keep or scrap a controversial Obama-era rule that speeds up union elections. Business groups like the U.S. Chamber of Commerce have been pushing the NLRB to roll back the rule, which allows elections to be held in as few as 10 days from the filing of a petition. Opponents have dubbed it the “ambush election rule,” claiming it gives employers little notice of an election and almost no time to discuss the issues with their workers. “The rule is heavily, heavily slanted to...