"I'm thinking about setting up a commission, perhaps headed by Rudy Giuliani, to take a very serious look at this problem," Trump said Wednesday during a phone interview on "Fox and Friends."
 
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Trump floated the idea while criticizing President Obama for not using the term "radical Islamic terrorism" following the attacks in Paris and San Bernardino, Calif., late last year. 
 
"It's a real problem, not only here but throughout the world," Trump said.
 
Giuliani backed Trump ahead of the New York primary last month. Trump's last two GOP presidential rivals dropped out of the race last week after Trump's victory in the Indiana primary, making him the presumptive Republican presidential nominee.