12:05 p.m.: Donald Trump says he would have refused to meet with Chinese officials if they treated him like they treated President Barack Obama over the weekend.
The Republican presidential highlighted the issue as he met with labor leaders Monday in suburban Cleveland.
Trump noted that Obama couldn't use his traditional staircase to exit Air Force One when he arrived in China over the weekend. The president used an alternative exit instead, something Trump described as "a metal staircase in the back of the plane."
Trump called it "a sign of such disrespect."
"If that were me," Trump said, "I'd say, 'You know what folks, I respect you a lot, let's close the doors, let's get out of here.'"
Obama has downplayed the issue.
11:55 a.m.: Donald Trump says America's manufacturing jobs are "going to hell."
The Republican presidential nominee blamed the Obama administration for allowing companies to move jobs to Mexico. He also lashed out at the proposed Trans-Pacific Partnership as "a catastrophe."
The New York billionaire made the comments during a Monday round table discussion with labor leaders in suburban Cleveland.
He's spending Labor Day campaigning alongside running mate Mike Pence in battleground Ohio.
The pair met with about a dozen current and retired union members, including teamsters, steelworkers, plumbers, police patrolmen and firefighters.
Trump noted that he's often best known for immigration, but he's also focused on jobs and the economy.
"We're going to stop companies from leaving," Trump vowed. He said it's going to be "so easy."
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