The White House described the footage as “apparently appalling”.
US Border Patrol officers are seen using whips to stop Haitian migrants in a series of shocking photos and in a video that surfaced on Monday.
It followed earlier images of a US border guard riding on migrants near a camp in Del Rio, Texas.
Some Haitian migrants are crossing the US-Mexico border and entering Mexico’s Secudad Acuna to buy food and water as the Texas camp is in short supply.
On Monday, the temperature also reached 40 degree Celsius, causing trouble to the people.
Reuters witnesses saw officers on horseback with cowboy hats blocking the migrants’ way and one even twisted a rope near a migrant’s face.
Other Haitians returned to Mexico for fear that they would be deported by the US back to their home country.
It is believed the “whip” used against migrants may be a longer rein, which the Department of Homeland Security Secretary Alejandro Meyercas said is using to “ensure control of the horse”.
The footage shocked many on social media, and US Border Patrol Chief Raul Ortiz said the “unacceptable” reaction was being investigated.
He also said that patrol officers were working in a difficult environment, searching for smugglers while trying to rescue migrants.
White House Press Secretary Jen Psaki was also asked about the incident and she replied: “I don’t have the full context. I can’t imagine what context would suit it. But I don’t have additional details.” “
She continued: “I don’t think anyone looking at that footage would think it was acceptable or appropriate.”
Asked what the Biden administration would do in response, Psaki said: “We just saw this footage, we just have to get more information on it.”
Pressed further, she added: “Of course, they should never be able to do this again. I don’t know what the circumstances will be. It’s frankly appalling.”
The incident follows recent actions by US officials to stem the influx of migrants from their home countries in Central and South America.
Del Rio is now a temporary home for more than 12,000 migrants – Texas Governor Greg Abbott claimed this had risen to 16,000 on Saturday – all hoping to claim asylum in the US.
Maxon Prudhomme, a Haitian expat in Mexico, told Reuters: “The treatment they are giving is racism because of the color of our skin.”
On Saturday, the US also said it would increase deportation flights for migrants and the first flights to take migrants back from Del Rio to Haiti arrived on Sunday.
It is becoming a growing crisis US President Joe Biden To manage despite pressure on Mexico by the White House to block migrant flows for years.
Haitian Wildely Jeanmarie said: “They can’t send us back to Haiti because everyone knows how Haiti is right now.”