Jim Gilmore will jump into the overflowing Republican presidential race.
"I don't suspect Governor Romney will endorse anyone in this race," Rubio said.
Pataki suggested the pair go "mano a mano" on immigration policy.
Julian Hattem 07/06/15 10:01 AM EDT
"He should be in front of hearings — in front of Congress — if there’s another attack."
“I don’t think he represents the Republican Party," Bush said.
Trump said he is the only 2016 hopeful speaking out on immigration and border security.
"I think he made a severe error in saying what he did about Mexican-Americans," Romney said.
Mitt and Ann Romney will head to Kennebunkport, Me., for lunch with Jeb next week.
The 2016 Republican presidential contender refused to back down in a Wednesday interview.
"I think he’s the real deal," Paul LePage said of Christie.