President Obama on Wednesday delivered a sharply personal rebuke of GOP presidential candidate Ted Cruz for his call to institute surveillance on Muslim communities in response to the Brussels terrorist attacks.

During a press conference in Argentina, Obama called such a proposal "wrong and un-American" and said it would undermine the U.S. campaign against Islamic extremists.

Obama invoked Cruz's Cuban heritage, arguing the Texas senator was ignoring the personal journey of his father, who fled the island nation for the United States to escape political oppression.

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