US airlines on Wednesday spoke out against the Trump administration's "zero tolerance" immigration policy that resulted in the separation of migrant children from their families. American Airlines, United Airlines and Frontier Airlines all issued statements in the hours before President Donald Trump backed down and signed an executive order to end the controversial policy. Delta Air Lines (DAL) commended Trump for reversing course. American, United and Frontier earlier on Wednesday asked the federal government not to use their planes to transport migrant children after they're taken from their parents. American Airlines said it has "no desire to be associated with separating families, or worse, to profit from it. We have every expectation the government will comply with our request and we thank them for doing so."

... Frontier said in a brief statement posted to Twitter that it "will not knowingly allow our flights to be used to transport migrant children away from their families."... United Airlines (UAL) said it has "serious concerns" about the immigration policy, and said it has "contacted federal officials to inform them that they should not transport immigrant children on United aircraft who have been separated from their parents."