The workers, who prepare in-flight meals and snacks, are demanding a minimum wage of $15 and threatening to go on strike.
Despite tales of sexual harassment and assault, the leading industry lobby sees the devices as a "fig leaf" and a "solution in search of a problem."
“I kept saying this is just evil, raw evil."
The hospitality union Unite Here plans demonstrations in 40 cities: "We need protections for the workers who drive this industry."
Trump has refused to negotiate with a housekeepers' union, leading to picket lines at his hotels.
It's asking travelers not to stay at his hotels or play golf at his courses.
Bellhops, housekeepers and cocktail waitresses are in a showdown with the casino's billionaire owner.
The Trump International Hotel has tried and failed to quash a union drive.
Hotel workers accuse Trump's organization of trying to bust a union for housekeepers.
Hillary Clinton attended a protest to support the workers in October.
Our union represents more than a quarter million hotel, food service and gaming industry workers who make at most $50,000 per year in wages and benefits. The majority of UNITE HERE's members are women and immigrants. Most drive modest family cars--not Cadillacs--if they have a car at all.
From farmworkers to restaurant servers, the food system employs millions of laborers around the world to pick, package, transport, deliver, and cook our food every day. Of the 3 billion workers in the world's labor force, about 40 percent are employed in agriculture alone, according to the International Labor Organization of the United Nations (ILO).