He said other passengers responded with jeering, in Putonghua and English, and chants of "lock him up" when the man finally left the plane - a chant directed at Clinton during Trump rallies.
Authorities asked a passenger on an United Airlines flight on Sunday traveling from Shanghai, China, to Newark, New Jersey to leave for being allegedly unruly.
Due to the delay, the flight was forced to make an unscheduled stop in San Francisco to switch crews.
Videos on social media showed an unidentified elderly man wearing a red "Make America Great Again" cap heatedly insisting that he was entitled to a seat and yelling at fellow passengers.
Cellphone videos recorded by multiple travelers on board United Flight 87 out of Shanghai Pudong International Airport on Sunday afternoon captured the commotion sparked by the purported Trump supporter. The incident caused more than two hours of delays, the Washington Post reports The man wearing the hat asked to be upgraded to first class, "because he had points", Clark Gredoña, a passenger on the plane, told the Post.More news: What's the Deal With Apple Inc.'s 12.9-Inch iPad Pro?
All passengers had to de-plane while local officials dealt with the matter.
The man eventually deplaned voluntarily in Shanghai, according to Jonathan Guerin, a spokesman for United Airlines.
He continued, "Captain, crew, and airport staff come over". Man threatens that they'll have to drag him off the plane. Gredoña said he relented after, " berating some female passengers and crew, calling one passenger "Hillary" and 'lesbian'". It arrived in Newark at 2:22 a.m. Monday, more than eight hours after its scheduled arrival time.
"We're grateful for the patience shown by our customers who endured the disruptive behavior of this passenger, as well as the exceptional poise and professionalism of our flight crew".