IAM District 751 said Saturday it received a negotiated proposal and resolution to end the strike and that it will present it to members for a vote on Wednesday.
Television cameras showed Diggs and Nixon jawing with each other as an official separated the two of them.
Trump was campaigning in Latrobe, Pennsylvania, where Palmer was born in 1929 and learned to golf from his father.
People resorted to cooking with improvised wood stoves on the streets before the food went bad in refrigerators.