The endorsement came after Clinton - and only Clinton - addressed the NEA's board for an hour and a half.
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.
"Jobs in the auto industry helped build America's middle class, but today they are adding to the nation's low-wage crisis."
For Alaskan hotel workers, instead of battling weather and wilderness, they have been locked in a lengthy campaign for decent wages.
A tentative contract features gradual elimination of the system that the Detroit 3 automakers instituted after hitting the financial rocks during the Great Recession.
Fifty years ago, the great grape strike started in Delano, when Filipino pickers walked out of the fields on September 8, 1965.
"We are the ones who pay for the government of this state and country with the labor of our hands."
Smisek and his overpaid boardroom buddies nationwide have swindled American workers and communities.