Labor issues

Presidential candidate and former U.S. Department of Housing and Urban Development Julian Castro speaks with a supporter prior to rallying with McDonald's employees and other activists demanding fairer pay, better working conditions, and the right to unionize in Durham, N.C., Thursday, May 23, 2019. (AP Photo/Gerry Broome)

FILE - In this Dec. 4, 2015, file photo, a man walks through the employee parking lot at the Volkswagen plant in Chattanooga, Tenn. In a split decision, the National Labor Relations Board on Wednesday, May 22, 2019, has ruled in favor of Volkswagen in a setback for unionization efforts at its Chattanooga, Tennessee, plant. The NRLB has dismissed a petition for a union vote by the United Auto Workers based on a technicality. The union intends to refile immediately. (AP Photo/Erik Schelzig, File)

In this Wednesday, April 24, 2019, photo, American Airlines aircraft are shown parked at their gates at Miami International Airport in Miami. American Airlines is accusing its mechanics and their unions of conducting an illegal work slowdown to gain leverage in contract talks, and the airline is asking a federal judge to stop the activity. (AP Photo/Wilfredo Lee)

Democratic presidential candidate Sen. Kamala Harris, D-Calif., talks during her campaign organizing event at Los Angeles Southwest College in Los Angeles, on Sunday, May 19, 2019. (AP Photo/Richard Vogel)

Saudi Arabian freighter Bahri Yanbu is docked in Genoa's port, Italy, Monday, May 20, 2019. The freighter allegedly carrying weapons that could be used in the war in Yemen is scheduled to load further cargo before departing for the Saudi port of Jeddah late Monday despite protests by harbor workers, according to the Italian news agencies. (Luca Zennaro/ANSA via AP)

European Union Council President Donald Tusk leads a march celebrating Poland's 15 years in the EU and stressing the nation's attachment to the 28-member bloc ahead of May 26 key elections to the European Parliament, in Warsaw, Poland, Saturday, May 18, 2019.(AP Photo/Czarek Sokolowski)

FILE - This July 23, 2014 file photo shows a state prison in Florence, Ariz. In May 2019, Corizon Health Inc. and Corizon LLC that provide health care in jails and prisons across the United States, including this one in Florence, have agreed to pay $950,000 to resolve a lawsuit that alleged it discriminated against employees with disabilities by failing to accommodate them, requiring them to be fully healed before they can return to work, and firing them. (AP Photo/File)

Tasos Katopodis/Getty Images

In this May 3, 2019 photo, Bruce Kudick shows off the Trump 2020 hats he bought during a Waukesha County GOP gathering in his hometown of New Berlin, Wis. Kudick, who retired but went back to work at a Wisconsin blood center, just got a raise and he's giving President Donald Trump credit for the strong economy. (AP Photo/Sara Burnett)