Former President Barack Obama deconstructed some of Donald Trump’s playbook attacks while campaigning for Vice President Kamala Harris in Nevada on Saturday.

Speaking at a rally in Las Vegas, Obama accused the Republican presidential nominee and his running mate, Sen. JD Vance (Ohio), of leaning on scaremongering about immigration as an answer to any issue.

“If you challenge them, they’ll fall back on one answer. It does not matter what it is — housing, health care, education, paying for the bills — one answer: blame the immigrants,” he said.

“He wants you to believe that if you elect him, he will just round up whoever he wants and ship them out and all your problems will be solved,” he added.

He acknowledged that there’s a “real issue” at the border and elements of the system are “broken,” but criticized Trump’s approach.

“When I hear Donald Trump talk … he’s very quick to say to Kamala, ‘Well, you were vice president for four years,’” he added. “Dude, you were president for four years!”