After leading the email investigation, Strzok became a top official on special counsel Robert Mueller's investigation into whether Trump or his associates colluded with Russian Federation during the 2016 election.
Giuliani, who worked as a federal prosecutor for almost a decade, claimed he had seen no evidence to warrant Manafort being sent to jail.
"Of course it's wrong to lie, it breaks one of the commandments, I think", Giuliani replied before arguing Trump's "distinction is a correct one".
This is a breaking story.
He went on to say that pardons weren't out of the picture, but would have to wait until the investigation was over.
Gazinsky scores first World Cup goal
British pop star Robbie Williams performed at the opening ceremony at the Luzhniki, which will also host the final on July 15. Two-goal hero Denis Cheryshev celebrates victory with teammates after Russia's 5-0 rout of Saudi Arabia .
But he did accuse the Mueller investigation - yet again - of being "political" and rife with "unfairness", perhaps unfair enough to merit pardons for those who get caught by it.
FILE - In this May 5, 2018, file photo, Rudy Giuliani, an attorney for President Donald Trump, speaks at the Iran Freedom Convention for Human Rights and democracy in Washington. I just read it here in The Washington Post.
Giuliani and Trump have been frequent critics of the special counsel's probe, often calling for its conclusion and seeking to undermine its legitimacy. He added, "I think here Jeff [Sessions] is not giving the president the best advice".
The former mayor of NY, who is part of the President's legal team in the Russian Federation investigation, was on Staten Island campaigning for Republican Rep. Dan Donovan. "If Manfort is convicted, will President Trump pardon him?"
The Russia probe, Guiliani says, is illegal because of its genesis, and not because of Special Counsel Robert Mueller who, Trump's lawyer claims, should not be investigated.
Appearing on "Face the Nation", Giuliani said Trump's legal team nonetheless owed it to him to "sort through" the options of how an interview with Mueller could proceed, because "the president wants to do it".
Mr. Trump has sought to use the report to discredit Mr. Mueller's investigation, although it didn't address the topic. "The phony Russian Collusion was a made up Hoax. I don't know, but I want to find out before I go forward", Giuliani said when pressed about Strzok. The department's inspector general released a report this week into the handling of Hillary Clinton's email scandal, revealing that FBI agent Peter Strzok, who oversaw the Clinton investigation and was later removed from the Mueller probe, had suggested in text messages that the FBI would "stop" a Trump presidency two months before the 2016 election.