Story highlights Rep. Chu: "I am deeply concerned by the disturbing actions taken aboard United Airlines Flight 3411"

Many social media reactions have accused the airline of racial discrimination

(CNN) The chair of the Congressional Asian Pacific American Caucus called on the Trump administration to launch an investigation into the violent removal of a passenger from a United Airlines flight Sunday.

"United Airlines' public response to this situation has resulted in more questions than answers," Rep. Judy Chu, D-California, wrote to Transportation Secretary Elaine Chao in a letter Wednesday. "Although overbooking is a common practice among many commercial airline carriers and is not illegal, I am deeply concerned by the disturbing actions taken aboard United Airlines Flight 3411 to remove Dr. Dao."

A passenger told CNN that Dr. David Dao, a Vietnamese-American immigrant, was overheard saying he was being profiled for being Asian before police officers forcibly removed him from his seat on the overbooked flight at Chicago's O'Hare International Airport.

Video of Dao being dragged off a Louisville bound flight with a bloodied nose has gone viral and attracted tens of thousands of outraged posts. Many reactions on social media called for a boycott of United, accusing the airline of racial discrimination.

"It is imperative that we have more information on the industry practices that led to this particular incident and whether these policies meet Federal standards," Chu wrote to Chao. "Your Department is uniquely positioned to protect passengers from such gross violations of their basic rights."

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