A top House Republican on the homeland security committee warns that the visa waiver program poses a threat to the United States.

The program permits visa-free travel access to the U.S. from allied nations, where the Islamic State is busy recruiting new members, said Rep. Candice Miller, R-Mich.

Miller, vice chair of the House Homeland Security Committee, said in Saturday's GOP address that the visa-waiver program is "a glaring hole we have to close."

"The members of ISIS will use every means within their power to attack our country. And that's why we have to use every mean within our power to defend it," she said.

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