How a fringe online claim about immigrants eating pets made its way to the debate stage

Sen. Lindsey Graham, a Trump ally from South Carolina, questioned the former president’s focus.

“I don’t know about dogs and cats,” Graham said in an interview Thursday. “But there are numerous young women who have been raped and murdered by people who were in our custody here illegally, and we let them go. That’s what I’d be talking about. That should be the face of a broken immigration system, not cats and dogs.”

While the fallout has been a combination of bafflement and outrage, the makings of the moment are rooted in grievances that have long defined and animated Trump and his followers — and on the platforms where those grievances blossom.

Trump, who launched his first presidential campaign with a speech that broadly characterized Mexican immigrants as dangerous criminals, has kept immigration and border security issues central to his third White House bid. “I want to be clear on this. That is a very minor, minor issue happening in the United States,” Rep. Byron Donalds, a Trump loyalist from Florida, told NBC News when asked about the pets remark in the post-debate spin room.

Those looking for someone to blame offered several suspects. Laura Loomer, a right-wing political activist and conspiracy theorist who had been posting about the rumor, traveled with Trump to the debate Tuesday.

“Why do you want to speak to me? I don’t work for President Trump,” Loomer responded when reached by NBC News.

Loomer and Trump did not speak on the plane ride, a source familiar with the trip said. And a Trump aide noted that Loomer “is not a member of our staff.”

“The president is the most well-read man in America, and he has a pulse on everything that is going on,” the aide added.

The Springfield rumor “made it to his desk. He was made aware of what these residents were saying.”Others focused their suspicions on Vance, given how he had forced the issue into the spotlight.

“It’s all JD,” a source linked to the campaign said.

Another source close to Trump’s campaign said Trump and Vance did not discuss the Springfield issue ahead of the debate.

“I don’t know what he was thinking,” a different Trump ally said of his choice to bring up the Springfield rumor unprompted.

The blame, this person said, solely rests with Trump.

“You don’t prep Donald Trump,” the ally added. “You can make suggestions.”