Walker hinted he's willing to let Rubio and Bush duke it out for their home state.
Martin Matishak 05/26/15 03:13 PM EDT
The senator's office suggested the pair will discuss Iran's nuclear program.
The Wisconsin governor assailed talks with a nation that “wishes to wipe Israel off the map.”
Swing district Rep. Ann Kirkpatrick could face incumbent Sen. John McCain in the general.
"We're going to do better than people think," the presidential candidate said.
Paul helped scuttle compromise to reauthorize government surveillance programs.
The Clintons marched behind veterans at a parade in their adoptive hometown.
Jeb Bush and Mike Huckabee have already announced they will not take part.
“We need serious discussion about serious issues," the White House candidate said.
“This thing has been studied to death," Julian Castro said.