De Blasio has yet to endorse a candidate in the Democratic race.
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"He should be embarrassed to even show his face in public,” said Jindal.
Gov. John Kasich (R-Ohio) said on Tuesday that he supports the Cleveland Cavaliers signing retired NBA guard Allen Iverson.
Carson said of Clinton: “I don’t think she’s going to be the nominee."
Josh Earnest touted mental healthcare provided by the Affordable Care Act and Medicaid.
He said he would be "much more comfortable" if teachers were trained and armed.
Move is intended to address overcrowded prisons and give relief to drug offenders.
Sen. Marco Rubio (R-Fla.) laughed off the heckler, calling the incident "kind of weird."
The president will also travel to Oregon later this week.
"I would say 'Hey, guys, everybody attack him!' "