Liz Shuler knows she has a long summer ahead of her. Over the past week, the president of the AFL-CIO, which has more than 15 million members, has seen organized labor’s ongoing battle with the Trump administration come under an even brighter spotlight. David Huerta, the president of the Service Employees International Union of California (SEIU), was arrested on June 6 during a demonstration against an Immigration and Customs Enforcement (ICE) raid in Los Angeles’s garment district. His detention set off alarm bells among unions across the country, and made it clear that organized labor would play a major role...