Summit participants responded with sustained applause when Sarita Gupta, executive director of Jobs with Justice, said "the strongest form of workers' voice is having a union on the job."
"The company wanted to tell the workers the union can't do a damn thing for you."
"U.S. workers have a basic right to speak out and challenge sexual harassment and discrimination in the workplace."
The endorsement came after Clinton - and only Clinton - addressed the NEA's board for an hour and a half.
Trumka says a wide-ranging coalition has already formed and is growing, to stop the scheme.
The CWA and the Teamsters reached a tentative first contract for 15,000 passenger services agents at American Airlines.
They came from cities up and down the East Coast to show their unity and support for each other in ongoing contract struggles.
A key issue in the rejection was the pact's apparent free hand to FiatChrysler to shift jobs between U.S. plants or to Mexico.
Groups came together to demonstrate their support for the workers at the Hyatt Regency Santa Clara and Citrix who are fighting for quality jobs and fair treatment at the workplace.
"Steel jobs provide decent living wages and help support a lot of other jobs in the community; the company wants to take that away."