Trump said the policy was aimed at preventing threats from terrorists and international criminals, noting that some of the banned countries had weak visa screening systems, high overstay rates or a lack of sharing of security information with the United States. Afghanistan and Somalia, for example, have been plagued by internal conflicts and terrorism, while Cuba and Venezuela have strained relations with the United States. The Boulder attack was the catalyst for the administration to adopt the policy, a move to take a tougher stance on both domestic and foreign threats.
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