"Anti-Semitism is horrible, and it has to stop, and it's going to stop," Trump told MSNBC.
About 100 Jewish cemetery headstones were vandalized in the US state of Missouri over the weekend. Moreover, Jewish community centers in the cities of Chicago, Houston and Tampa received bomb threats.
"We have to have a safe country," Trump said. "We have to let people come in who are going to love the country, not people who are going to harm the country."
On Monday, the White House released a statement in which it said hatred and hate-motivated violence of any kind have no place in the United States.