Texas Senator Ted Cruz called for law enforcement in the U.S. to clamp down on Muslim neighborhoods in an effort to stop them from becoming "radicalized" after the terror attacks in Brussels.

The GOP presidential contender came right out of the box Tuesday morning calling for President Obama to immediately return from Cuba in order to deal with the crisis in Belgium that claimed dozens of lives.

In a statement posted to his Facebook account, Cruz criticized European nations for allowing migrants into their countries, saying, "Our European allies are now seeing what comes of a toxic mix of migrants who have been infiltrated by terrorists and isolated, radical Muslim neighborhoods."

Ted Cruz
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"We will do what we can to help them fight this scourge, and redouble our efforts to make sure it does not happen here," he added before stating, "We need to immediately halt the flow of refugees from countries with a significant al Qaida or ISIS presence."

Cruz then made his proposal to single out Muslim neighborhoods in the U.S. for special — and likely unconstitutional — attention.

"We need to empower law enforcement to patrol and secure Muslim neighborhoods before they become radicalized," he wrote.

He added, "The days of the United States voluntarily surrendering to the enemy to show how progressive and enlightened we are at [sic] an end."