He even recently suggested he would like to bring Flynn back to the White House once investigations into the Trump team's ties to Russian Federation are over.
TRENTON, N.J. (AP) New Jersey Gov. Chris Christie says President Donald Trump's fired national security adviser would not have gotten into the White House's front door had he been elected.
Christie has made it clear that when he led Trump's White House transition, he did not see eye to eye with Flynn, a retired Army lieutenant general who had been forced out of the Defense Intelligence Agency by former President Barack Obama.
"If I were president-elect of the United States, I wouldn't let General Flynn in the White House, let alone give him a job", said Christie, who, in part, helped oversee Trump's transition into the White House.
"I would say that Mr. Ciattarelli is wrong about that", Christie said.
Normally a strong supporter of Trump and his policies, Christie voiced disagreement with the president's reported characterization of Comey after firing him.
"Some of it involves classified information that I'm just not at liberty to discuss", he said.
At another point during the news conference, Christie invited a group of Lakewood, Ocean County, students who were touring the Statehouse to join him at the podium while he took questions, including several about the planned renovations, which have been panned by most of the candidates running to succeed him.
Christie makes it clear that there is no love lost between himself and Flynn.
A new report alleges President Trump had contacts with former National Security Adviser Mike Flynn as recently as last month.
A total of 4.3 million New Jersey residents are now working, a historic high, Christie said.
Christie, surrounded by schoolchildren here for a tour, offered reporters a "history lesson" as he pointed to the official portraits of governors hanging in his outer office and made the case that he shouldn't - and won't - get blame or credit for the outcome of November's general election.
"That's efficient government, baby", Christie said.
Ciattarelli has attacked the administration's record and said: "We need to move beyond the Christie-Guadagno era".